As a marinade for meat or poultry, beer penetrates, flavours and tenderizes. Good beer is less acidic than wine so your food can be left in your marinade longer increasing the flavour. When you are roasting or braising and beer is used to baste the food or in the basting sauce, it imparts a rich, dark colour as the sugars caramelise. So, cooking with beer is great for adding flavour to BBQ’s and slow cooked casseroles and stews.