Kahlua

Boil:
6 cups of sugar
3 cups of water

Boil until almost clear, then cool.

When your sugar water is cool add a mixture of:
1/2 cup of brandy, bourbon or vodka
1/2 cup of instant coffee (not freeze dried)

Pour into containers. Add vanilla beans (at last 1 per bottle). Let sit at least 7 days. The longer it sits, the better it tastes!