FA-97089 / Recipe scaling and nutrition / Member archive

High-altitude baking adjuster: first altitude threshold · case 04

A kitchen at exactly 3000 ft gets no adjustment.

Member previewVariant 4 · 3 implementations · 8 checks per implementation

Case contract

Level 0 below 3000 ft, 1 for 3000-4999, 2 for 5000-6999, 3 at 7000+. Baking powder times (1-level/8); sugar times (1-level/16) (1 tbsp per cup per level); liquid times (1+3*level/32) (1.5 tbsp per cup per level); oven +15 F at levels 1-2 and +25 F at level 3. Amounts are fraction strings in and exact str(Fraction) out.

Why this case matters

Cake and quick-bread recipes need leavening, sugar, liquid and temperature changes at elevation.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
threshold 3000	`{"baking_powder_tsp": "2", "level": 0, "liquid_cups": "1", "oven_f": 350, "sugar_cups": "1"}`	`{"baking_powder_tsp": "7/4", "level": 1, "liquid_cups": "35/32", "oven_f": 365, "sugar_cups": "15/16"}`	Failed

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