Rianne's Satay Sauce

Ingredients:

2 tablespoons peanut oil
2 cloves garlic, roughly chopped
2 big stalk fresh lemon grass, tough outer bits removed, roughly chopped
2 inch piece of fresh ginger, minced
1 cup coconut milk
1 cup natural peanut butter
1 tablespoon sugar
1-1/2 tablespoons sesame oil
4 tablespoons soy sauce
2 tablespoons fresh lime juice
2 tablespoons rice vinegar
small bunch of cilantro, coarsely chopped