Bacon Onion Green Chile "Jam" Burgers

by Katie of:

1 pound bacon
4 medium onions, chopped
2 poblano peppers, chopped
4 cloves garlic, minced
1 T. tomato paste
1/4 c. brown sugar
1/4 c. apple cider vinegar
2 t. espresso powder 
1/2 t. salt
1/4 t. pepper

Chop bacon into 1/2 inch pieces. Fry until almost crisp.  Add in onion, poblano and garlic. Stir over medium heat until onions are transluscent and peppers have lost their bright green color, about 15-20 minutes.  Add in remaining ingredients and reduce heat to very low simmer and continue to cook for one hour, stirring every 5 minutes. Color should darken and the liquid should cook in and all vegetables should become very soft. Pulse mixture in a food processor leaving still semi-chunky or using an immersion blender right in the pot.  Simmer 15 minutes more. Jar or transfer to container to cool. Serve warm over burgers with guacamole, lettuce and tomato.