Here is what the Anglicans did when they could not get the elements just right:
http://www.cuf.org/2005/02/invalid-masses/The first missionaries walked across what is now Tanzania and were then paddled across Lake Victoria.
They had all their provisions carried for them. In 1877 CMS missionaries arrived in
Buganda. In 1895 Bishop Tucker arrived.5 He soon realized that the provision of communion
wine was an issue. By January 1896 he had “provisionally” sanctioned the use of native wine
from the juice of bananas. It would appear that this continued off and on until the coming of the
railway, and thus a reliable supply route.
This was taken into account again in the Amin years, and with the economic collapse of the country banana wine was used by the church alongside other materials. Indeed, the Church of Uganda has a canon that says: “In absence of grape wine
well-boiled banana juice wine or pineapple or passion fruit wine may be used, in consultation
with the bishop” (2.13.3). Here is another sliding scale: if no grape wine, use fruit wines from
local fruits.