Most eggplant tapenades are olive-based, but no olives here
2 medium yellow onions, small dice
3-4 small to medium eggplants, peeled, ¼” dice (you should have similar amounts of onion and eggplant – maybe slightly more eggplant. Smaller dice is better – less likely to fall off your bread!)
3-4 Tbsp olive oil
1 Tbs chopped capers, chopped (optional)
¼ cup currants (or raisins, if no currants)
1-2 Tbs sherry or red wine vinegar
A pinch each of ground cumin and coriander
Salt & pepper to taste