Slice the onions super thin

Sweat the onions in butter for 1 hour on medium low. Stir ocassionally

While they are sweating combine the red wine, sugar, star anise, chsmpange vinegar, and reduce to 1 cup

Once the reduction is done stir into the onions and mix in the thin sliced green onion, and zest and remove from heat.

Season with salt and pepper and store