This grower is sure of this plant identification.
4 x plug plants
Beautiful purple fruit, large size. Many are a bright violet color throughout their flesh. Much sweeter than the green types; it can be eaten right off the plant. Turns purple when ripe; rare!
Tomatillo, Jamberry, Mexican husk tomato
Physalis ixocarpa (Tomatillo). This species is raised commercially as an edible berry, It is a perennial about 1m tall, It produces large greenish yellow fruits borne in papery, purple-veined husks. The pulp is glutinous and is used with chillies in sauces.
They will prefer moist, well-drained soil with a position in sun or partial-shade. You can propagate from seed or by division.