Clear explanations of nutrition concepts such as protein, fiber, glycemic response, energy density and nutrient quality.
Leucine is one of the nine essential amino acids. In USDA references per 100 g, grated parmesan provides ~2.75 g, roasted chicken breast ~2.33 g, cooked yellowfin tuna ~2.27 g, cooked soybeans ~1.36 g and cooked egg ~1.08 g. Foods high in protein are usually strong leucine sources too.
Discarding soaking water can reduce some oligosaccharides associated with gas and other soluble compounds. It can also carry away minerals and nutrients. There is no single rule for every legume: fresh cooking water may help digestive tolerance, while using the soaking water can also be reasonable if you tolerate legumes well.
A 90/10 label describes the raw mixture: roughly 90% lean tissue and 10% fat by weight. It does not mean 100 g cooked meat will contain exactly 10 g fat, because cooking changes both water and fat content.
Legumes contain fermentable carbohydrates such as raffinose, stachyose and verbascose. Some reach the colon and are fermented by gut microbes. Soaking, discarding the water, cooking thoroughly and increasing portions gradually can reduce discomfort.
“Nutrient-dense” does not simply mean “low calorie.” It describes foods that provide meaningful nutrients relative to their energy or serving size. Broccoli can be nutrient-dense at roughly 35 calories per 100 grams, and sardines can also qualify near 200 calories because they bring protein, omega-3, B12 and calcium.
Protein complementarity does not mean two “incomplete” foods magically create protein when mixed. It means amino acids that occur in relatively lower proportions in many grains—especially lysine—are better represented in legumes, while grains help with other amino-acid proportions.
Roasting does not empty a nut of nutrition. Protein, minerals, and the broad fatty-acid profile change relatively little, while heat-sensitive compounds such as some tocopherols, thiamin, carotenoids, and polyphenols can fall—especially with hotter or longer roasting.
For comparing nuts, about 1 ounce or 28–30 grams of edible kernels is a useful reference. There is no fixed piece count: that weight can be roughly 20–25 almonds, 15–20 cashews, 12–15 walnut halves, or 40–50 pistachio kernels depending on size.
The value of rice with beans or lentils goes beyond the phrase “complete protein.” Legumes dramatically raise the protein and fiber of a rice-based meal and supply more lysine, an amino acid relatively limited in many grains. Complementarity works across the diet, not only in one bowl.
Two foods can each provide 20 grams of protein without providing exactly the same protein quality. The body needs nine indispensable amino acids in adequate proportions, and it also has to digest and absorb them. “Complete protein” is only a shorthand for part of that process.
A Nutrition Facts label becomes much easier once you separate three questions: what is in one serving, how that serving compares with a daily reference, and how many servings you actually eat.
Soy and pea isolates can provide similar grams of protein per scoop. Soy tends to have a somewhat stronger indispensable amino-acid profile, while modern pea isolates can still be highly digestible and high quality.