I grew a bonchi, accidentally. Basically, I found a volunteer aji lemon drop, which had already hardened off at the base, even though it was only about 3 inches tall. It was growing in chunky pine bark, so there was really no root support. 6 months ago, I put it in a solo cup, and have just fed it fish emulsion and seaweed. The leaves have stayed teeny tiny, and although it's gotten bushier, it's absolutely bonchi-ish. It's even made quite a few pods. Very healthy little plant, although miniature.
Does that count?