Portion analysis
Serving total and calorie density answer different questions
The listed source amounts run from 58 to 130 grams—a 72-gram gap before composition enters the comparison. Their own source servings run from 132 calories for “English” to 523 for “chocolate chip.” At a fixed 100 grams, “wheat bran” is 208 calories and “chocolate chip” is 402—a fixed-weight separation of 194 calories. For Muffins, 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 “carrot”, “English”, “oat bran”, “wheat”, and “whole wheat”. The source formulations contain 25 distinct ingredient codes; examples that appear in only part of the set include eggs, grade a, large, egg whole, flour, wheat, all-purpose, enriched, bleached, leavening agents, baking powder, double-acting, sodium aluminum sulfate, and milk, nfs. On this Muffins 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.