A bottle of char siu sauce is a must-have for the modern cook. It’s a Chinese barbecue sauce that adds instant flavour to stir-fries, and can also be used as a glaze for meat and chicken. Char siu sauce does wonders for burgers and meat loaves. Look for it in your supermarket where stir-fry sauces and Asian condiments are sold. If you can’t find it, try using hoisin and oyster sauces, which give equally delicious results.