aubergine berry brinjal cultivars eggplant elongated oval-shaped food fruit glossy guinea squash healthy melongene nightshades nutritional oval-shaped perishable purple shapes smooth Solanaceae Solanum melongena spongy texture taste texture textures variations variety vegetable vegetarian elongated elongated-oval-shaped white aubergines guinea-squash Solanum-melongena spongy-texture striped chain link massive metal oval security torus torus-shaped appearance appearances color colour droplets drops moist moisture sprayed surface surfaces wet