To make autumn olive puree, choose one of the following methods. 1. Put raw berries through a Squeezo Strainer, or 2. Gently simmer berries with a small amount of water until soft. Put through a Foley Food Mill.
For every 4 cups of puree, use the items and amounts in the ingredient list.
Place autumn olive puree in a crockpot with no lid and gently simmer until reduced by half.
Tie onion and spices in a spice bag. Add to the puree, along with the sea salt, vinegar, and maple syrup.
Continue cooking until thick.