Shopping Tip:
XO sauce is a spicy seafood sauce. Find it in Asian supermarkets.
Substitution Tip:
Cook 1 finely chopped shallot with 2 minced garlic cloves in 1 tbsp vegetable oil until soft. Stir in 1 tbsp oyster sauce, 1 tsp each hot chili-garlic sauce and fish sauce, 1/2 tsp brown sugar and a pinch of cumin.