Sponge Candy From Buffalo, Ny - cooking recipe

Ingredients

1 lb. granulated sugar
1/2 pt. water
4 Tbsp. white vinegar
3 Tbsp. golden syrup
1/2 tsp. baking soda, sifted
12 oz. chocolate chips
2 Tbsp. vegetable shortening
1 oz square unsweetened baking chocolate

Preparation

Butter or oil an 8 in. square tin, set aside.
Put sugar, vinegar, syrup and water in a heavy saucepan (cast iron if you have it).
Be careful that your pot is big enough, because sugar has a tendency to boil over.
Gently heat the mixture, stirring with a wooden spoon, until sugar has dissolved and syrup has melted.
Bring to a boil, cover and boil for 3 minutes, then uncover and boil until temperature reaches 300\u00b0 F on a candy thermometer.