Blend tuna caviar, olive oil, lemon and lime juice and pumpkin seed oil in a blender. Fold in to that mixture the pumpkinseeds, garlic chives, tuna and salt and pepper. Reserve 4 tablespoons of dressing. Refrigerate until ready to assemble dish.;
Toss all the ingredients and bake in a preheated 400 degree oven until tender, about 5 to 8 minutes. Once cooked, chill.;
Mix all ingredients together.
Assembly: In a 3-inch round mold, first layer the calabaza squash. Then layer the tuna. Remove the mold and top with peppercress salad. Drizzle the remaining 4 tablespoons of caviar dressing on the plate.
Recipe courtesy of Guillermo Pernot of Pasion, Philadelphia