• 2 quarts water
• 1/3 cup Old Bay seasoning, plus more for garnish
• 1 pound dried elbow macaroni
• 1 pound small or medium frozen cooked and peeled shrimp (26 to 30 per pound)
• 1 1/2 cups mayonnaise, preferably Duke's
• 1 medium red bell pepper, diced small (1 cup)
• 1/2 medium red onion, diced small (1 cup)
• 2 medium celery stalks, diced small (3/4 cup)
• 5 medium scallions, finely chopped (1/2 cup)
• 1/3 cup coarsely chopped fresh dill
• Finely grated zest of 1 large lemon (2 teaspoons)
• 1/4 cup freshly squeezed lemon juice

(The Kitchn, this week)

Old Bay is doing more work here than a garnish. Store-bought or homemade, the spice blend gives the dish its seafood-boil character, and cooking both pasta and shrimp in it infuses every bite with savory, peppery spice (The Kitchn, this week).

This shrimp elbow macaroni salad leans on that pasta shape for a reason: the little curves hug bits of shrimp and vegetable in every scoop, while still soaking up the creamy dressing (The Kitchn, this week).

Frozen cooked shrimp is the shortcut that keeps the ingredient list this manageable. Small or medium shrimp, in the 26-to-30-per-pound range, spread evenly through the batch, keeping shrimp in nearly every spoonful instead of a few unlucky bites (The Kitchn, this week).

Duke's is the mayonnaise this recipe was built around, prized for a richer, tangier dressing that plays well against shrimp; homemade mayonnaise works too if that's the preference (The Kitchn, this week). Bell pepper, red onion, and celery add crunch that cuts the richness, while scallions and dill lean into the seafood pairing and the lemon zest and juice brighten the bowl. The finished dish is creamy without turning heavy, full of sweet shrimp and crisp vegetables, more a creamy shrimp pasta salad than a mayonnaise-heavy one (The Kitchn, this week).

One quirk worth flagging: The Kitchn's own dietary tags for this recipe include "shellfish-free" and "vegetarian," despite a full pound of shrimp sitting in the ingredient list (The Kitchn, this week). Automated tags aren't a substitute for reading the ingredients, so anyone cooking for a shellfish allergy should check the list directly rather than trust the label.

Have a large pot, a colander, and a big mixing bowl ready before starting. The shrimp go into the pot frozen, so there's no need to thaw them first.

1. Bring the water to a boil, seasoned heavily. Combine 2 quarts water and 1/3 cup Old Bay in a large pot over medium heat and bring to a boil. This concentration is what carries seafood-boil flavor into the macaroni as it cooks (The Kitchn, this week).
2. Cook the macaroni just shy of al dente. Add the elbow macaroni and cook according to package directions for 1 minute less than al dente, so it still has a slight bite when drained (The Kitchn, this week).
3. Add the frozen shrimp straight to the pot. Stir them in and simmer about 2 minutes, just until warmed through, then drain everything together without rinsing so the Old Bay stays on the pasta. Let it cool 5 minutes before mixing (The Kitchn, this week). Because the shrimp arrive already cooked, this step is a two-minute reheat, not a real simmer, which is what turns the pot into a spice bath rather than a cooking vessel.
4. Build the dressing while the pot is going. In a large bowl, whisk together the mayonnaise, bell pepper, red onion, celery, scallions, dill, lemon zest, and lemon juice. Doing this step in parallel is what keeps the total time to around 30 minutes (The Kitchn, this week).
5. Combine while the pasta is still warm. Stir the macaroni and shrimp into the dressing until everything is evenly coated, then finish with an extra pinch of Old Bay (The Kitchn, this week).

That's the whole method. Because the pasta already tastes seasoned before the mayonnaise touches it, the dressing's job shifts from supplying all the flavor to coating and finishing, which is a lighter lift than it sounds.

The Kitchn's method works the way it's written because the pasta already carries flavor from the cooking water, and the dressing goes on while everything is still warm to help it coat evenly (The Kitchn, this week). A five-minute rest is enough because the salad is heading straight to a serving bowl or the fridge, not sitting under a heat lamp at a buffet.

That's a different approach from the general advice for cold pasta salads. Serious Eats argues that pasta served cold right off an al dente cook has poor texture, and recommends cooking it about two minutes past al dente, tossing it with roughly a third of the dressing while hot, spreading it on a sheet pan to cool for about 15 minutes, then folding in the rest of the dressing once everything has cooled (Serious Eats, about a year ago). That method is built for salads where the pasta itself needs to hold its texture cold, a different goal from a shrimp salad that gets its flavor from the cooking liquid and is dressed warm on purpose. Anyone who wants a firmer bite in a cold shrimp macaroni salad could apply the past-al-dente, sheet-pan approach instead, though it would mean handling the shrimp separately, since they only need warming rather than a long simmer.

For a batch made more than a few hours ahead, The Kitchn's own notes cover the make-ahead window directly: assemble the salad, cover it, and refrigerate for up to 24 hours, then taste and adjust the seasoning before serving (The Kitchn, this week). If it looks dry after that rest, stir in up to 1/4 cup more mayonnaise (The Kitchn, this week). That's the make-ahead instruction as written: a longer chill and a mayonnaise top-up, nothing more elaborate.

Day-two leftovers get a slightly different fix. Give the salad a good stir before serving, and if it's dry, mix in a spoonful of mayonnaise along with a squeeze of fresh lemon juice to freshen it up (The Kitchn, this week). The lemon juice is specific to reviving leftovers, not part of the 24-hour make-ahead step.

The Kitchn's own recipe page isn't fully consistent on how long this salad lasts. One note caps storage at 2 days in an airtight container; a separate tip on the same page says leftovers keep up to three days (The Kitchn, this week). A different storage guide stretches that window further, to 3 to 4 days in the refrigerator (EatHealthy365, about four months ago). Given the mismatch, 2 days is the safer number to plan around. Shrimp and mayonnaise don't leave much margin for error, and general food-safety guidance backs up the caution: for most refrigerated foods, aside from a handful of exceptions like smoked fish, storage length alone isn't a reliable test of safety (OSU Extension Service, about two years ago).

Time and temperature before the salad ever reaches the fridge matter more than the calendar. Don't leave it out longer than two hours, or one hour if it's above 90°F, roughly 32°C (The Kitchn, this week; OSU Extension Service, about two years ago). That window matters more than how the salad looks or smells, because mishandled perishable food can seem completely fine and still not be safe to eat (OSU Extension Service, about two years ago).

Spoilage signs are a separate, one-way check. Discard the salad if it develops an off odor, mold, or a slimy texture, and don't treat the absence of those signs as proof that food left out too long, or stored too long, is still safe (OSU Extension Service, about two years ago).

For picnics and potlucks, nesting the serving bowl in ice can help, but only if the ice actually keeps the salad cold, not if the bowl just sits near it while the contents creep toward room temperature (EatHealthy365, about four months ago). The two-hour and one-hour limits still apply regardless of ice; once time's up, the salad needs to go back in the fridge or stay at 40°F (4°C) or below. Bringing a second, fully chilled batch to swap in partway through a long event is a sensible hosting habit, not a way to stretch the clock.

The base recipe leaves room to swap in whatever's on hand. Fresh parsley, chives, or tarragon can stand in for the scallions and dill for a different herb profile, and a dash of cayenne or a favorite hot sauce stirred into the dressing adds heat without touching the method (The Kitchn, this week).

Pasta shape is flexible too. Small shells, ditalini, or cavatappi all work in place of elbow macaroni if that's what's in the pantry, since the cooking-water technique doesn't depend on any particular shape (The Kitchn, this week).

The decision here is short. Serving within the hour, follow the recipe as written and let the five-minute rest do its job. Making it a day ahead, cover, refrigerate for up to 24 hours, and top up with mayonnaise if it looks dry once chilled. Handling leftovers, stir well, refresh with mayonnaise and a squeeze of lemon, and treat 2 days as the outer edge given the discrepancy in The Kitchn's own guidance.

Scaling the recipe for a bigger gathering doesn't change any of those limits. A doubled batch sitting out at a barbecue still needs to come off the table or get properly iced on the same two-hour schedule as a smaller one. Bigger bowl, same clock.