1. Divide the desired yield by the recipe's original yield.
Do this whether increasing or decreasing a yield.
Decrease
original yield is 12 servings; desired yield is 6 serving;
6 divided by 12 equals 0.5 or 1/2
Increase
original yield is 4 servings; desired yield is 7 serving;
7 divided by 4 equals 1.75 or 1-3/4
2. Multiply each ingredient amount by the result in step 1.
Decrease
original amount is 1/2 c.;
1/2 times 1/2 equals 1/4c as the new amount.
Increase
original amount is 1/2c.;
0.5 times 1.75 equals 0.88c as the new amount.
3. Convert the measurements into logical, mangeable amounts.
Decrease
1/4c. easy to measure with equipment
Increase
1/2c equals 4 oz.;
4 oz. times 1.75 equals 7oz. or 3/4 c. plus 1/8 c.;
or 3/4c plus 2 tablespoons
4. Make any adjustments in equipment, temperature and cooking time.