Whiskey Kielbasa

3-5 # kielbasa
1 cup whiskey (can be less)
1 cup ketchup
1 cup brown sugar

Boil kielbasa 20 minutes, slice and set aside. Boil whiskey, ketchup & brown sugar over low heat until mixture is thoroughly combined. Pour mix into a slow cooker along with the kielbasa. Cook for 3-4 hours.