Every ingredient line is converted to grams and grouped (Dijon and yellow mustard count as mustard; vinegar, lemon and pickle juice as the acid), then divided by the weight of the eggs and shown per egg, an egg counted as 50 g. That is the only comparison that holds across recipes of different sizes.
81% of the 2,814 ingredient lines got a weight. 9% of those weights were printed by the source; the rest were converted from cups, spoons and counts with standard weights, so treat single recipes as close, not exact. Garnishes and toppings are listed on each recipe page but left out of the numbers.
A recipe outside the plausible range for any ingredient is left out rather than allowed to stretch every chart; it is usually a different dish with the same name or a misread line. Of the pages fetched, 166 were left out: 44 with a title that names a different dish, 43 too many lines without an amount, 29 outside the plausible range on some ingredient (vinegar or juice 16, salt 9, dairy or avocado 2, meat or fish 1, pickles and relish 1), 19 duplicates of other pages, 10 with an ingredient in amounts that could not be weighed, 10 over the 12-per-site cap, 8 with no eggs, or none that could be weighed, and 3 too few ingredient lines.
Every recipe page links to the original, which is where the method is. Recipe Lab does not republish instructions or photos.