Protein, fats, carbohydrates, fiber, vitamins, minerals, calories and food composition explained with practical context.
Potatoes do not have a unique ability to create body fat. Overall energy balance matters, and preparation dramatically changes the calories in a serving: boiled potato is about 87 calories per 100 g, while a USDA fast-food french-fry reference is about 312 calories and 14.7 g fat per 100 g.
Frying changes potato composition per 100 grams far more than boiling. A USDA boiled-potato reference provides about 87 calories and almost no fat per 100 g; a fast-food french-fry reference provides about 312 calories and 14.7 g fat. Water loss concentrates the potato while absorbed oil adds substantial energy.
Plain boiled and baked potatoes are nutritionally similar. USDA references for flesh without added fat put boiled potato around 87 calories per 100 g and baked flesh around 93 calories. Baking loses slightly more water and concentrates nutrients; skin and toppings usually matter more than the cooking method itself.
Yes, sweet potato skin is edible. Wash the potato thoroughly under running water and scrub the firm surface before cooking; do not use soap or detergent. Leaving the skin on keeps additional fiber and reduces waste, although damaged, rotten or unpleasantly tough areas should be removed.
Among common fresh fruits, guava provides about 2.6 g protein per 100 g, passion fruit about 2.2 g and avocado about 2.0 g. Those are high within the fruit category but low compared with beans, dairy, eggs, fish or meat, so fruit usually adds protein rather than serving as the main source.
The throat sting in many virgin olive oils, especially fresh oils from greener fruit, is normal and can be a positive sensory attribute. Oleocanthal is one compound involved: it activates TRPA1 sensory receptors and creates a distinctive pharyngeal pungency. It is not the same thing as the oil's free-acidity number.
Yes, the white fat on Iberian ham is edible. It is subcutaneous fat that contributes to the ham's flavor and texture. Leave it on if you enjoy it, trim some if you want a leaner serving, and treat unusual rancid odor or flavor as a separate quality issue.
Cooked white rice provides about 130 calories and 28 g carbohydrate per 100 g, with very little fat and fiber. Dry rice looks far more calorie-dense per 100 g because cooking adds water and spreads the same energy across a heavier portion.
Roquefort, Parmesan and feta are among the most sodium-dense cheeses. USDA references put Roquefort and grated Parmesan near 1,800 mg sodium per 100 g, while some mozzarella and Swiss cheeses are far lower. Actual serving size and the specific brand determine how much sodium reaches the plate.
Iberian ham fat is a mixture of fatty acids, but oleic acid often dominates in acorn-fed ham. Some analyses have found values close to 60% oleic acid in specific fat samples. Feeding changes the profile measurably and helps explain the soft, melting texture.
Whole wheat and rye are not opposites: rye bread can also be whole-grain. Generic USDA references put both near 6 g fiber per 100 g, while whole-wheat bread provides more protein. For fullness, the strongest case is for genuinely whole-grain, fiber-rich rye products.
Cheese is made from milk, but it does not keep all of milk’s lactose. Roughly 98% of milk lactose is removed in whey or converted to lactic acid during cheesemaking, and residual lactose is metabolized early in ripening. Many firm aged cheeses therefore end up with very small amounts.