U/15 vs 31-40 Shrimp Sizes: A Complete Guide to Shrimp Sizing and Selection

Last Updated Mar 3, 2025

Shrimp sizing U/15 indicates larger shrimp with fewer than 15 pieces per pound, ideal for grilling or main dishes that highlight their size and texture. In contrast, 31-40 shrimp are smaller, yielding more pieces per pound and are well-suited for recipes like salads, stir-fries, or appetizers where bite-sized portions are preferred. Choosing between U/15 and 31-40 shrimp depends on the desired presentation, cooking method, and portion size for the dish.

Table of Comparison

Shrimp Size Count Per Pound Average Weight (g) Typical Use Price Range (USD/lb)
U/15 Under 15 28-32 Grilling, large shrimp recipes 12 - 18
31-40 31 to 40 14-17 Frying, cocktail shrimp 8 - 12

Understanding Shrimp Sizing: U/15 vs 31-40

Shrimp sizing indicates the number of shrimp per pound, with U/15 meaning under 15 shrimp per pound, signifying larger, meatier shrimp ideal for grilling or main dishes. In contrast, 31-40 shrimp per pound denotes smaller shrimp suitable for recipes requiring quick cooking or more delicate textures. Understanding these sizes helps optimize cooking methods and portion control, enhancing culinary results.

Shrimp Size Grading Explained: What Do U/15 and 31-40 Mean?

Shrimp size grading uses counts per pound to indicate shrimp size, where U/15 means under 15 shrimp per pound, representing larger shrimp ideal for grilling or presentation. The 31-40 range indicates 31 to 40 shrimp per pound, signifying medium-sized shrimp commonly used in salads or stir-fries. These size classifications help buyers and chefs select shrimp based on cooking method and desired portion size.

Visual Differences: Comparing U/15 and 31-40 Shrimp

U/15 shrimp are significantly larger, often exceeding 15 shrimp per pound, with a plump body and prominent meat texture, making them ideal for grilling and presentation. In contrast, 31-40 shrimp are smaller, yielding 31 to 40 shrimp per pound, characterized by a more delicate size and quicker cooking time, suitable for salads or stir-fries. Visual differences are clear: U/15 shrimp show a more robust and bulbous exterior, while 31-40 shrimp appear slender and more uniform in shape.

Flavor and Texture: How Size Impacts Shrimp Dishes

U/15 shrimp, being larger, offer a meatier texture and richer flavor, ideal for grilling or stuffing where a hearty bite is preferred. In contrast, 31-40 shrimp are smaller with a more delicate texture and subtle taste, making them perfect for dishes requiring quick cooking like stir-fries or salads. The size difference significantly affects cooking time and flavor absorption, influencing the overall experience of shrimp dishes.

Cooking Methods for U/15 vs 31-40 Shrimp

U/15 shrimp, being larger and meatier, are ideal for grilling, frying, or stuffing due to their firm texture and ability to hold up well during high-heat cooking methods. In contrast, 31-40 shrimp are smaller and more delicate, making them perfect for boiling, steaming, or sauteing, which preserve their tenderness and delicate flavor. Cooking times vary significantly, with U/15 requiring longer heat exposure compared to the quick, gentle methods suited for 31-40 shrimp to avoid overcooking.

Portion Planning: Serving Sizes for Different Shrimp Grades

U/15 shrimp, meaning under 15 shrimp per pound, offer larger portions ideal for appetizer servings or gourmet dishes requiring statement pieces. In contrast, 31-40 shrimp per pound provide smaller, uniform sizes suitable for salads, soups, and stir-fries where consistent bite-sized portions are essential. Selecting between U/15 and 31-40 shrimp ensures precise portion planning tailored to menu needs and cost control in foodservice operations.

Price Comparison: U/15 vs 31-40 Shrimp in the Market

U/15 shrimp, known for their larger size, command a higher price per pound in the seafood market compared to 31-40 shrimp, which are smaller and more affordable. The price differential reflects the demand for U/15 shrimp in premium dishes and their lower yield per pound. Buyers typically choose 31-40 shrimp for budget-friendly options without sacrificing taste or quality in recipes.

Best Recipes for U/15 and 31-40 Shrimp

U/15 shrimp, larger and meatier, are ideal for grilling, frying, and shrimp cocktails where a juicy, succulent bite is desired, such as Cajun shrimp skewers or garlic butter shrimp. The 31-40 shrimp, smaller and more tender, work well in stir-fries, tacos, and pasta dishes that benefit from quick cooking and a delicate texture, like shrimp scampi or shrimp tacos with fresh salsa. Selecting recipes that highlight the size-specific texture and flavor of each shrimp category enhances culinary results and dining satisfaction.

Buying Tips: How to Choose the Right Shrimp Size

When selecting shrimp, understanding the U/15 and 31-40 sizing is crucial for cooking and presentation. U/15 shrimp are larger, often preferred for grilling or recipes requiring whole shrimp, while 31-40 are medium-sized, ideal for salads, stir-fries, or shrimp cocktails. Choose based on recipe requirements and desired texture; larger shrimp offer a meatier bite, whereas smaller sizes cook faster and blend well with other ingredients.

Storage and Preparation Techniques for Different Shrimp Sizes

U/15 shrimp, larger in size, require longer thawing and cooking times compared to 31-40 count shrimp, which are smaller and cook faster with more uniform heat distribution. Proper storage for U/15 involves keeping them in a single layer to prevent freezer burn and maintaining consistent freezing temperatures of -18degC (0degF) to preserve texture. For 31-40 shrimp, quick thawing methods such as cold water immersion reduce bacterial growth, while their smaller size permits rapid marinating and even cooking in recipes like stir-fries or salads.

U/15 vs 31-40 for shrimp sizing Infographic

U/15 vs 31-40 Shrimp Sizes: A Complete Guide to Shrimp Sizing and Selection


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