Sponge Toffee

Ingredients

• Vegetable oil, to grease the pan
• 2 ½ cup granulated sugar (625 ml)
• ⅔ cup light corn syrup (150 ml)
• 6 Tbsp water (90 ml)
• 2 Tbsp baking soda (30 ml)
• 2 tsp vanilla (10 ml)