==Leucine-Rich Foods

The following foods contain the highest concentrations of leucine per standard serving:

Meat & Poultry

Chicken Breast: ~ 2.3 g of leucine per 100g (about 3.3 g per 200 calories)
Beef (Top Sirloin / Skirt Steak): ~ 1.3 g to 2.9 g per 100g
Pork Chops: ~ 2.1 g of leucine per 100g

Fish & Seafood

Tuna: ~ 1.9 g of leucine per 100g (about 3.6 g per 200 calories)
Salmon: ~ 1.6 g of leucine per 100g
Yellowtail: ~ 3.5 g of leucine per half-fillet 

Dairy & Eggs

Swiss Cheese: ~ 3.9 g of leucine per cup
Parmesan Cheese: ~ 2.8 g of leucine per 100g
Cottage Cheese: ~ 1.5 g of leucine per cup
Whole Eggs: ~ 1.4 g of leucine per 200 calories 

Plant-Based & Vegan Sources

Soybeans & Edamame: ~ 3.3 g of leucine per 100g
Tempeh: ~ 2.3 g of leucine per cup
Pumpkin Seeds: ~ 2.4 g of leucine per 100g
Hemp Seeds: ~ 2.2 g of leucine per 100g
Cooked Lentils: ~ 1.8 g of leucine per 100g (about 1.1 g per 200 calories)