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Sponge Toffee
Ingredients
2 1/2 cups white sugar 2/3 cup corn syrup 1/3 cup water 4 tsp baking soda 2 tsp vanilla
In a large pot, combine sugar, corn syrup and water, stirring ONLY until the sugar is dissolved. Then allow the mixture to boil for about 10 minutes without stirring until it reaches 300F on a candy thermometer (or hard crack stage)
Remove from the heat and add the baking soda. Be careful - it will sputter and foam up. Stir in vanilla and the pour the mixture in a 9x13 metal baking pan that has been greased and lined with foil.
Allow mixture to sit for 2 hours at room temperature to cool. Break into pieces and store in a covered container.
You can also dip the pieces in melted chocolate for an extra special treat.