Peanut Brittle

Directions

1. 1
   Grease a large cookie sheet.
2. 2
   In heavy 2-quart saucepan over medium heat, heat sugar, corn syrup, water and salt to boiling, stirring frequently until sugar is dissolved.
3. 3
   Stir in peanuts. Carefully set candy thermometer in place and continue to cook, stirring frequently until temperature reaches 300° or hard crack stage (when a small amount of mixture dropped into a bowl of very cold water separates into hard and brittle threads), about 20 minutes.
4. 4
   Remove saucepan from heat; immediately stir in butter or margarine and baking soda.