Heh. It's pretty simple. Starting gravity around 1.054. Half wheat, half 2-row. 3oz of AGED hops (at least 3 years old, with no alpha acids left). Add Wyeast Lambic Blend (bacteria and wild yeast). Wait 12 months. Add canned cherries (oregon puree). Wait another 6 months.
If you're not prepared to wait that long (and tie up a carboy for that long), it's better to just buy it from the store.
I just started my first lambic last week...which will be a kriek someday. I can't wait till xmas '09 when I can drink it.