ConceptWhat is a ratio?
A ratio compares two quantities. Example: 2:3
means “2 parts of the first thing for every 3 parts of the second thing.”
2:3 is equivalent to 4:6.
Purpose: the show’s recipes only work if the ratios stay correct. If the ratio breaks, the judges will taste regret.
Optional: 13A Math Reading • 13C Debug the Math
Stage 0Ratio translator
Ratios can be written in different ways: 2:3, 2 to 3, or 2/3 (depending on the context). In recipes, we usually mean “parts,” not division.
Translate this ratio:
Stage 1Equivalent ratios
To make an equivalent ratio, multiply both numbers by the same factor. Example: multiply 2:3 by 3 → 6:9.
Kitchen drama:
Stage 2Scale a recipe without breaking it
Scaling is a ratio problem: If you double the servings, you double each ingredient amount (and so on). The “scale factor” is target servings ÷ original servings.
Recipe card: