When I put alcohol in a recipe, does it all cook off?

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When I put alcohol in a recipe, does it all cook off? Should I be concerned with how much alcohol is left?

Alcohol added to a recipe may cook off, but it depends on how long you cook it. People with alcoholism should be concerned with how much alcohol is left which will be inconsistent with a sober lifestyle. Rena Cutrufelli of the USDA prepared the following table of alcohol content in cooked foods. You can compare your recipe directions to the table below to determine how much alcohol is left.

Preparation Method Percent Retained
Alcohol added to boiling liquid & removed from heat 85%
Flame 75%
No heat; stored overnight 70%
Baked, 25 minutes, alcohol not stirred into mixture 45%
Baked/simmered, alcohol stirred into mixture:
15 minutes 40%
30 minutes 35%
1 hour 25%
1.5 hours 20%
2 hours 10%
2.5 hours 5%