Portion analysis
Serving total and calorie density answer different questions
Every selected record uses a 125-gram source amount, so serving-weight differences do not explain the calorie spread inside this set. Their own source servings run from 254 calories for “chicken, with beans” to 333 for “cheese only.” At a fixed 100 grams, “chicken, with beans” is 203 calories and “cheese only” is 266—a fixed-weight separation of 63 calories. For Nachos, the serving view answers “how much is in the database portion?”; the 100-gram view answers “how concentrated is the matched record?” Neither reveals how many grams were actually eaten.
The scaling rule: multiply a per-100-gram value by eaten grams ÷ 100. The arithmetic is exact; the result is only as defensible as the record match and portion estimate.
Preparation analysis
The long description carries the evidence
The published descriptions distinguish forms such as “beef or pork”, “beef or pork, with beans”, “chicken”, “chicken, with beans”, and “with beans”. Across the source formulations, the shared backbone includes cheese sauce and snacks, tortilla chips, plain, white corn, salted; differentiating rows include salt, table, refried beans, canned, traditional, reduced sodium, beef as ingredient in recipes, and chicken as ingredient in recipes. On this Nachos page, those rows make the records inspectable, but they are not a controlled experiment: they cannot tell us that one named input, by itself, caused a nutrient difference.
Database precision is not meal certainty. Retain the exact description beside the number so later corrections remain possible.