Yes it is documented that the Guyanese Blacks diet was whatever the slave masters provided, rice was not part of it originally, even though later on the slavers tried to introduce rice production to supplement.
Look at this site and do a find on rice, not 1 hit. Now go argue with the people at liverpool museums.
Brazilians eat rice. Jamaicans eat rice. Cubans eat rice. Haitians eat rice as do blacks in the southern states. NONE of those places had Asian populations when rice consumption became a fact of life.
Do you know that St Kitts Nevis has a dish called cook up rice?
Just now you will scream that Indians brought cook up rice to Guyana and St Kitts. When I went to the Music Festival there years ago I had a delicious pig tail and pigeon peas cook up.
Some of them might even think that Indians only began to eat rice when they came to the Caribbean because just as your ignorant ass thinks that all blacks eat is fufu I bet that some of them think that all Indians eat is roti,