Step 1

Heat oil in a saucepan over medium heat. Add onion and cook, stirring, for 5 minutes or until soft and golden. Add garlic and chilli and cook for 1 minute or until aromatic. Remove from heat.

Step 2

Add peanut butter and stir to combine. Place over low heat. Add water, lemon juice, vinegar and sugar. Cook, stirring, for 3 minutes or until sauce thickens.