“sourdough”
10 recipes vs 309Recipes with “sourdough” in the title: less leavening (3.5% vs 5.2%).
“sourdough” (10)the rest (309)middle half of all
Leaveningrecipes with sourdough in the title 3.5% vs the rest 5.2%
Biscuits Lab
American biscuits, flaky to fluffy: fat, buttermilk and leavening per 100 g of flour.
321 recipes from 91 sites, each reduced to grams and written as baker's percentages: grams of each ingredient per 100 g of flour, so a small recipe and a double batch line up. Below: the typical batch, how far recipes stray from it, and a page for every recipe with a link to the original.
Recipes
321
from 91 sites
Typical flour
300 g
about 2 1/3 cups
Oven
425°F
220°C · median of 300
Bake time
15 min
most 13 to 18 min
The median of all 321 recipes for each ingredient, scaled to 300 g of flour. No single recipe is exactly this: each line is the middle of its own distribution. “Most recipes” means the middle half, from the 25th to the 75th percentile.
| Ingredient | Grams |
|---|---|
| FlourThe scale for everything else | 300 gabout 2 1/3 cups |
| FatMost recipes use 100 to 135 g | 120 gabout 1/2 cup |
| ButtermilkMost recipes use 210 to 295 g | 255 gabout 1 cup |
| LeaveningMost recipes use 13 to 18 g | 15 g |
| Sugar30% use none; the rest mostly 9 to 23 g | 10 gabout 2 1/3 tsp |
| SaltMost recipes use 3.5 to 7 g | 5 g |
Bake425°F (220°C) for about 15 minutes.
Volumes are approximate: flour at 125 g a cup, sugar 200 g, butter or oil 225 g, milk and other liquids 240 g.
Each dot is a recipe, placed by grams of the ingredient per 100 g of flour (100% would be as much as the flour). The shaded band is the middle half of recipes and the line is the median.
median 40% · most 34 to 45%
Cold butter or shortening cut into the flour melts in the oven into steam pockets, which are the flaky layers.
range 11 to 80%
median 84% · most 71 to 98%
Buttermilk hydrates the dough and supplies the acid for baking soda. Wetter doughs rise taller and softer.
range 31 to 157%
median 5.1% · most 4.3 to 6%
Biscuits rely almost entirely on baking powder and soda; that is why they carry several times a cake's share.
range 1.6 to 11%
median 3.3% · 30% use none
Southern biscuits use little or none. Above this band the recipe is closer to a scone or a cookie.
range 0 to 20% · those that use some, mostly 3 to 7.6%
median 1.6% · most 1.2 to 2.3%
Salt is most of the flavor in a plain biscuit.
range 0.3 to 4.8%
Measured by how far apart the 25th and 75th percentile recipes are. The widest gaps are where the choice of recipe matters most.
Recipes agree most on fat and buttermilk: fat 34 to 45%, buttermilk 71 to 98% for the middle half.
English recipes whose titles use a word, against the ones that do not. What recipe writers do when they pick the word, not proof that it makes the texture.
Recipes called “easy” (24), “homemade” (22) or “flaky” (19) use about the same amounts as the rest on every ingredient measured here.
Recipes with “sourdough” in the title: less leavening (3.5% vs 5.2%).
“sourdough” (10)the rest (309)middle half of all
Leaveningrecipes with sourdough in the title 3.5% vs the rest 5.2%
Recipes with “cheddar bay” in the title: more fat (51% vs 40%).
“cheddar bay” (15)the rest (304)middle half of all
Fatrecipes with cheddar bay in the title 51% vs the rest 40%
50 biscuit recipes have 50 or more reader ratings. A rating count says how many people rated a page, which follows its traffic more than its quality. Against the other 271, medians per 100 g of flour, compared within each language:
On no ingredient do the most-reviewed recipes differ from the rest by more than chance would explain.
50+ ratings (50)the rest (271)middle half of all
Fatthe most-reviewed recipes 36% vs the rest 41%
Buttermilkthe most-reviewed recipes 87% vs the rest 84%
Leaveningthe most-reviewed recipes 5.3% vs the rest 5%
Sugarthe most-reviewed recipes 3.7% vs the rest 3.1%
Saltthe most-reviewed recipes 1.8% vs the rest 1.5%
300 of 321 recipes state an oven temperature, and 38% of those bake at 425°F (220°C). The middle half bake at 400 to 450°F. The other 21 do not say.
320 recipes state a bake time. Taking the middle of any stated range (“55 to 65 minutes” counts as 60), the median is 15 minutes and the middle half bake 13 to 18 minutes.
The single most common pairing is 450°F for 12 to 14 minutes, with 28 of the 299 recipes that state both.
Nearest the median on every ingredient at once.
In 2 languages: English 319, French 2. Lines in other languages are read in their own units and words, and each recipe page links to the original. 91 sites in all. No site contributes more than 12 recipes.
Every ingredient line is converted to grams and grouped (butter and oil count as fat; white, brown and liquid sweeteners as sugar), then divided by the flour weight. That baker's percentage is the only comparison that holds across recipes of different sizes.
97% of the 2,740 ingredient lines got a weight. 17% of those weights were printed by the source; the rest were converted from cups and spoons with standard densities, so treat single recipes as close, not exact. Frosting, glaze, streusel and other toppings are listed on each recipe page but left out of the percentages.
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, 595 were left out: 403 outside the plausible range on some ingredient (buttermilk 182, fat 137, sugar 50, salt 27, leavening 7), 91 with no flour, or none that could be weighed, 53 with a title that names a different dish, 23 made from a boxed mix, 11 a listing page, not a recipe page, 8 too many lines without an amount, 3 with an ingredient in amounts that could not be weighed, and 3 duplicates of other pages.
Every recipe page links to the original, which is where the method is. Recipe Lab does not republish instructions or photos.