How to Cook Live Lobster at Home

Every lobster we have ever ruined was ruined the same way. It stayed in the pot too long.

We have shipped live lobster out of LobsterAnywhere since 1999, somewhere past 900,000 boxes, and the question that still comes in more than any other is some version of how long. Shorter than you have probably read elsewhere. Nearly every lobster cooking time published online runs long, and lobster does not forgive it. A minute past done and sweet, firm meat turns into something you work at with your molars.

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Lobster Cooking Times by Weight

A 1½ pound lobster takes 8 to 9 minutes to boil or 9 to 11 minutes to steam, timed from the moment the water returns to a full boil.

Time each lobster by its own weight, not the combined weight of the pot. Four 1½ pounders are four nine-minute lobsters, not one thirty-six-minute lobster. This one mistake ruins more lobster than almost anything else.

Start the clock when the water comes back to a full boil, not when the lobsters go in. On a crowded pot, that can mean three or four minutes of difference. If the boil stops dead for more than about thirty seconds after the lobsters go in, the pot is overloaded. Pull some out and run a second batch, or switch to steam.

About temperature: for the texture we prefer, we pull lobster at 135–140°F in the thickest part of the tail, probing from the side nearest the body. If you are following FDA food-safety guidance, cook seafood to 145°F. Either way, use the thermometer as your final check instead of relying on shell color alone.

Salt the water, but less than you think. A quarter cup of kosher or sea salt per gallon is enough. You are not trying to make the lobster salty. The goal is to keep the cooking water from pulling too much of the lobster’s natural salinity into the pot. Going heavier does not make it taste more like the ocean. It just makes it taste like salt.

Shell matters more than the calendar. A hard shell may need a minute or two more than a soft shell. A soft shell overcooks fast, so watch it closely. Much of the Maine catch from July into late September is soft shell, but lobsters are graded before they ship. If your box came from us, follow the cooking time for the lobster you ordered. If you bought one off a dock in summer, squeeze the side of the body. A soft shell gives more easily. A hard shell does not.

In the trade, these run chickens, quarters, halves, selects, and jumbos. In Maine, they are just bugs. The grade does not change the basic rules. Weight, shell condition, and temperature do.

Hard shell vs. soft shell lobster · Best time to buy lobster, month by month · What size lobster to buy

Not everyone starts the clock in the same place. In Lobster at Home, chef Jasper White times from the moment the lobster hits the water, not from the return to boil. On the one- to one-and-a-half-pounders most people cook, subtract the pot’s recovery time and his numbers and ours land close to each other. He runs longer on the big ones, and he means to. White cooks giants slower and gentler. We take them shorter and use the thermometer as the final check. Before you decide two lobster charts disagree, check when each one starts its clock.

See the full lobster cooking-time chart, including 3- to 10-pound lobsters

How to Handle a Live Lobster

If the live part is the part you are dreading, you are in decent company. In Julie & Julia, Julie Powell drops three thermidor-bound lobsters into the pot, one of them shoves the lid off, and she screams and runs out of her own kitchen. Funny scene, real fear. It is also considerably worse in the movie than it is in your kitchen. See more lobster moments on screen.

Pick the mad one first. The lobster that raises its claws at you and flaps its tail is showing plenty of vigor.

Keep the bands on. Grip the top of the shell right behind the head, thumb on one side and middle finger on the other. From there, the claws cannot reach you. It may flap its tail. It is loud, it startles you, and then it is over.

You will find people who cut the bands off first. Some lobstermen swear the rubber affects the cooking water. We have heard that our entire career and still say leave them on. The bands slip off easily after cooking, and wrestling with a freshly unbanded lobster over boiling water is a bad trade for a difference we have never been able to taste.

My first one got me before it ever reached the pot. A quarter, meaning 1¼ pounds, bands already off, and I picked it up by the claw arm like a handle. The cutter got me. That is the smaller of the two claws, and it is named for exactly what it does. I can still tell you precisely how much that hurt.

The crusher is the big one. It is slow and built to break shells. The cutter is faster and the one more likely to find you. Learn more about lobster anatomy and lobster lingo.

Boiling? Keep the underside pointed away from you as the lobster goes into the pot. A strong tail flip can throw hot water. Learn that now rather than the usual way.

How to store live lobster · Humane lobster preparation

Steam vs. Boil: Which Is Better?

Short version: steam for dinner, boil for rolls. We usually boil when we are cooking more than four.

Cooking for a specific dish? Boil when you are picking meat for lobster rolls, salad, pasta, or bisque. The harder heat helps the meat release cleanly and makes a larger batch easier to manage. Steam when the lobster is going to the table whole. For thermidor and stuffed lobster, par-cook either way and finish in the oven with the sauce.

One pot note you will not find on a cookware site: you do not need an expensive stockpot. You need one that is big enough. If yours is too small, do not crowd it. Use two pots and divide the lobsters between them.

A steamer rack is useful but not mandatory. Its job is to keep the bottom lobsters above the water and give the steam room to circulate. An upside-down metal colander can do the same job. What matters is leaving enough room for steam to move through the pot.

Lobster pot sizes by count · Step-by-step steaming guide · Step-by-step boiling guide

More Ways to Cook Lobster

Boiling and steaming are the standards, but they are not your only options. Use this quick reference to choose a method, then jump into the detailed guide.

How to Tell When Lobster Is Done

The shell turns red no matter what. Red means heat was applied. It does not tell you whether the meat in the thickest part of the tail has reached the temperature you want.

Use a thermometer in the thickest part of the tail. For the texture we prefer, we pull at 135–140°F. FDA food-safety guidance for most seafood is 145°F. The rest are supporting cues, not replacements for temperature:

• Meat is opaque and pearly rather than translucent or glassy.
• Tail meat feels firm rather than soft.
• Roe, when present, may turn bright red and firm as it cooks. Treat it as another visual cue, not the final test.

Black or dark immature roe does not necessarily turn red simply because you cook the lobster longer. Do not keep cooking a finished lobster just to chase the color of the roe. Go by the meat and your thermometer.

You will also read that lobster is done when an antenna pulls out easily. Sometimes it does. Sometimes it does not. We would not bet a $100 dinner on it.

Undercooked lobster can go back to the heat. Overcooked lobster cannot be undone. When you are unsure, check the temperature instead of adding several extra minutes “just to be safe.”

If you need to stop the cooking quickly, move the lobster into an ice bath. If you boiled it, let excess water drain before it reaches the serving platter.

See our complete lobster doneness, temperature, and visual-cues guide

How to Cook Large Lobsters Without Making Them Tough

This one has been floating around for fifty years: anything over two pounds is supposed to cook up tough and stringy. It does not have to. Five- and six-pounders can come out every bit as sweet as a smaller lobster, with the bonus that the claw meat may come out in one piece you can actually slice.

What is true is that big lobsters are easier to ruin. More meat means more temptation to leave them in the pot far longer than they need.

I ruined my first 3-pounder on October 17, 2004.

The Sox were down 3-0 to the Yankees and facing elimination. I had a jumbo in the pot when the bottom of the ninth started, Rivera on the mound, 4-3. Then Roberts steals second, Mueller singles him in, and the thing will not end. Tenth. Eleventh. At 1:22 in the morning, bottom of the twelfth, Papi puts one in the Yankee bullpen, and Fenway comes apart.

Five hours and two minutes of baseball. Roughly forty minutes of lobster.

The pot boiled over onto the burner and that jumbo came out like shoe leather. Greatest night in Boston sports history and I ate a shoe.

That lobster was not tough because it was three pounds. It was tough because I left it in for forty minutes. Big lobsters are not automatically tough. Distracted cooks make them tough. Use a thermometer, and if the Sox are on, set a timer.

Jasper White approaches big lobsters from a different angle. His method is gentler: start them in boiling water, then reduce the heat so the lobster cooks more slowly rather than sitting in a violent rolling boil. Lower heat gives you a little more margin for error on a jumbo.

See cooking times, pot sizes, and temperatures for 3- to 10-pound lobsters

Common Lobster Cooking Problems

• Tough and rubbery. Usually overcooked. Too much time is the first thing to look at.
• Some lobsters done, some undercooked. Usually a crowded pot, mixed sizes, or uneven heat. Cook by individual weight and leave room around them.
• Mushy or cottony meat. Often a quality or freshness problem rather than a timing problem. If the lobster also has an off odor, do not eat it.
• Shell is red but meat is not done. Shell color is not a reliable doneness test. Check the thickest part of the tail.

What to Make with Cooked Lobster

If you are cooking clams or mussels for the same dinner, steam them separately or add them near the end and remove them as their shells open. Do not extend the lobster’s cooking time just to make the shellfish finish together.

Lobster salad · Lobster thermidor · Lobster pasta · Lobster rolls · Surf and turf

Melt the butter while you wait. It is about the only thing you have to do during those nine minutes. Whisk in a little lemon juice if you want to get fancy, or see whether one of our lobster butter sauces is worth the extra two minutes.

Lobster is leaner than most people expect for something that eats like a splurge. See our complete lobster nutrition facts for calories, protein, vitamins, and minerals.

Working with larger sizes from 3 to 10 pounds? Use our Large Lobster Times & Temps guide.

FAQ on How to Cook Lobster

My Family is Passionate About Our Seafood

I live in Texas, and I am a personal chef here. I have been a chef for 20 years now. I grew up in Long Island NY, and my grandfather was a lobster fisherman in the Long Island Sound in Cold Spring Harbor. I never in my whole career thought that I could have lobsters better than the one’s we had with my grandfather, but the lobsters you sent were as fantastic as my childhood memories.

Thank you So Much!

T. Steinhart

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Start with good lobster and the cooking part gets a lot easier. Shop live Maine lobster and put these techniques to work.