[The BFG] Snozzcumbers taste like regular cucumbers

In Roald Dahl's classic story "The BFG" the only food available in giant-land that isn't people is the nine-to-twelve foot long snozzcumber, which the BFG is forced to eat because he doesn't want to eat humans. Sophie, a young child says the snozzcumber tastes like "frogskin and rotten fish" and the BFG says it tastes like "cockroaches and slime wanglers."

I'd be willing to theorize that the snozzcumbers taste just like regular cucumbers. The only people who have tried them and commented on the taste are Sophie, a young girl who shouldn't be expected to like the taste of vegetables, the BFG who is rather immature himself, and the other giants who are equally lacking in maturity. It'd make sense that giants, or at the very least giants other than the BFG who are used to the meaty, and apparently delicious taste of humans would detest the flavor of a cucumber. And the BFG has giant taste buds, so it's likely the abhorrence to the flavor of a cucumber is inherited.

Since nobody in the book aside from a young child and some giants were able to try a snozzcumber, it's reasonable to expect that the snozzcumber being absolutely repulsive was a humorous subversion on Roald Dahl's part, making fun of how young children are repulsed by certain foods, and not just meant to be a convenient plot device.