Rinse the eggplant and slice them lengthwise. Sprinkle the slices generously with salt and let them drain.
After about 20 minutes, sauté them with a bit of oil in a nonstick pan over medium heat. When they’re done, lay them on paper towels to absorb the excess oil.
Mix the caprino with the chopped chives (keep aside a few stems) and season with salt and pepper to taste. Wash the tomatoes and purée them with about 2 tbsp. (30 ml) of oil.
Strain the purée with a fine mesh strainer and season with salt and pepper.
Slice the onions and heat them in a pan with the sugar and vinegar. When the liquid reaches a boil, turn off the heat and strain it.
Blend the basil leaves with 2 tbsp. (30 ml) of oil.
Place a tablespoon of cheese in the middle of each eggplant slice and roll it up.
Tie chive stems around it so it stays closed. Arrange them on serving plates with a spoonful of sweet and sour onions, a spoonful of tomato sauce and a drizzle of basil oil.