I developed this for our restaurant 'Watney's' in Allora, Queensland
It is a winner and keeps for ages in the 'fridge

Lionel's  BBQ SAUCE (MICROWAVE)

6 - 8 Servings

1 T onion finely chopped
½ clove garlic finely chopped
2 t butter
1 T brown sugar
1½ T tomato puree
1½ T vinegar (white)
2 t worcester sauce
2 t lemon juice
1 t parisienne essence (gravy browning)
½ t dry mustard
½ t salt
Dash pepper
small dash cayenne
small dash chile
small dash paprika

1.    MIX ALL ABOVE TOGETHER IN MICROWAVE JUG
2.    MICROWAVE  HIGH 1 MIN - STIR
3.    MICROWAVE  HIGH 1 MIN - STIR
4.    MICROWAVE  HIGH 1 MIN - STIR

T = Tablespoon
t = teaspoon