Such an easy BBQ sauce. If I want it spicy I usually add a little tabasco sauce or a little red pepper.
1/2 c. oil
3/4 c. chopped onion
Saute slowly until transparent
3/4 c. ketchup
3/4c. water
3 T. Worcestershire sauce
3 T. Brown Sugar, or more if you want it sweeter
2 T. Mustard
2 t. salt
1/2 t. pepper
1/4-1/3 c. lemon juice
Saute over low heat until thickened. Run through blender or use immersion blender for a smooth BBQ sauce.