However, my favorite condiment for a burger is ketchup. But, I also like mushrooms on a burger. Anyone who knows the history of ketchup knows that tomatoes are a fairly recent addition to the item. It likely began as ketsiap, a fish sauce of southern
The idea of creating a modern version of a Mushroom Ketchup was intriguing! I took inspiration from a recipe for Smoked Shiitake Catsup from Salsas, Sambals, Chutneys and Chowchows by Chris Schlesinger and John Willoughby. For the mushrooms, I used some shiitake added some maitake, oyster and portabellas – one pound in all. They were tossed in olive oil with a quartered onion, and grilled until the exterior was charred.
When they cooled, I put them in the food processor with a couple of cloves of minced garlic, ¼ cup of balsamic vinegar, a tablespoon of molasses, salt and pepper and about two teaspoons of fresh minced basil. Upon tasting, I added a bit more of the balsamic and molasses, and about a tablespoon of pureed chipotle chillis in adobo. YMMV.