Marinate the onions in the lemon juice overnight, refrigerated. Toast the cheese under the broiler until black, then cool and shred. Combine the marinated onions with the cheese, and remaining ingredients. Mix gently, but completely and serve immediately.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.
Recipe courtesy of Chef Joe Realmuto of Nick and Toni's in The Hamptons