Sea Scallops — Cups to Grams

Measuring Sea Scallops: Raw, Cubed, and Cooked

Sea scallop measurements vary substantially between raw whole, raw cubed, and cooked. Whole raw scallops leave air gaps in the cup; cubed pieces pack more efficiently; cooked scallops lose water weight and shrink. For recipe planning, always work in grams.

Atlantic Sea Scallops: Species and Sourcing

Placopecten magellanicus — the Atlantic sea scallop — is the most commercially important scallop species in North America, harvested from the Gulf of Maine south to North Carolina and across the Georges Bank fishery. The Georges Bank scallop fishery, managed by NOAA under the Magnuson-Stevens Act, is one of the most valuable single-species fisheries in the United States, producing approximately 34,000 metric tons annually.

Day-boat scallops (caught and landed on the same day) are the premium tier — sold fresh within 24 hours of harvest, these have a clean, sweet, ocean flavour with no ammonia notes. The majority of the commercial harvest is shucked at sea on larger vessels and flash-frozen onboard, yielding a product nearly equivalent to fresh when properly thawed. For home use, IQF (individually quick frozen) dry-pack sea scallops are an excellent and reliable option when fresh day-boat scallops are not available.

Sustainable sourcing note: the Atlantic sea scallop fishery was overfished in the 1990s but recovered dramatically under rotational area management introduced in 1994. The Marine Stewardship Council (MSC) certifies the US Atlantic sea scallop fishery as sustainable. Look for the MSC blue fish label when purchasing.

The Perfect Sear: Technique and Temperature

Seared sea scallops are among the most technically demanding everyday seafood preparations — a 30-second window separates a perfect sear from a rubbery, grey disappointment. The physics are straightforward: the scallop surface must reach approximately 150 degrees C (the Maillard reaction threshold) before the interior reaches 63 degrees C (fully cooked). This requires high heat, a dry surface, and a metal pan with good heat retention.

Step-by-step searing method: Remove scallops from refrigerator 15 minutes before cooking (cold scallops cool the pan). Pat absolutely dry with paper towels — repeat twice. Pull the small tough side muscle if present (peel it off with your fingers). Season with salt no more than 60 seconds before cooking. Heat a 12-inch stainless or cast-iron pan over highest heat for 3 to 4 minutes until it begins to smoke. Add 1 tablespoon of avocado oil or clarified butter. Place scallops flat-side down with space between each — do not crowd. Press gently for 5 seconds to ensure full contact. Cook 90 seconds without touching. Flip once — the crust should release cleanly. Cook 60 to 90 seconds more. Remove immediately.

Recipe Ratios and Serving Quantities

Sea scallops are expensive — precise quantity planning avoids waste. These are restaurant-tested portion sizes that apply to U/10 grade scallops weighing approximately 45g each.

Appetiser (per person): 3 scallops = approximately 135g raw (3.75 oz). Serve over 2 tablespoons of pea puree or cauliflower cream. Wine pairing: white Burgundy, Chablis Premier Cru, or Muscadet.

Main course (per person): 5 to 6 scallops = approximately 225 to 270g raw. Serve with risotto or pasta as a base (80g dry pasta per person + 250g raw scallops for a pasta main).

Scallop ceviche (2 servings): 200g raw sea scallops, sliced into 1/4-inch rounds. Marinate in 60ml fresh lime juice + 30ml lemon juice + 1/2 teaspoon salt + thinly sliced red onion for 8 to 12 minutes. The acid denatures surface proteins (acid-cure), turning the scallop opaque. Do not marinate more than 20 minutes — texture becomes rubbery.

Nutritional Profile

Sea scallops are one of the leanest and highest-protein seafoods. Per 100g raw: approximately 90 calories, 17g protein, 0.8g fat, 3g carbohydrate (from natural glycogen), 205mg potassium, 370mg sodium (raw, before cooking). Per 1 cup raw cubed (165g): 148 calories, 28g protein, 1.3g fat. Excellent source of vitamin B12 (45% DV per 100g), phosphorus (30% DV), zinc (18% DV), and selenium (24% DV). Very low in mercury compared to larger fish — safe for pregnant women in standard serving sizes per FDA guidance.