I’m going to boast on behalf of my mom here. She was making fat, juicy, gourmet burgers topped with caramelized onions before most of the chefs doing it these days were even born. Of course back then, I wasn’t so keen on her homemade burgers and would gladly have traded mine for a skinny one from a fast-food joint. Foolish. I finally saw the light, and I’m happy to say that both my kids have always preferred a good homemade burger to anything they might get from a drive-through. I knew the moment I tasted this red onion jam that it would be great on a burger, and it is, especially with blue cheese added to the mix. For a tasty variation, try the onion jam on lamb and feta burgers.
Text excerpted from PRESERVING ITALY © 2016 by Domenica Marchetti. Reproduced by permission of Houghton Mifflin Harcourt. All rights reserved. Photo © 2016 Lauren Volo.