ba mulendo.. I didn't think you'd have that issue at heathrow seeing how many southern Africans go through there.
I've never had any issues bringing in vinkubala (among other home foods),but not through heathrow however. but one would think the heathrow custom guys are so close to southern Africa, they might as well start eating vinkubala ne mbeba.
I still have some in the freezer, last time I was home my sister overbought, gave some away but still have some left. I can't stomach them