Meanings of eat jellies in English

I've got to eat jellies and sandwiches and things for two hours straight on end.

During a short interlude, crew members play darts, eat jellies and occasionally fire nerf guns at one another.

Then they ate jellies, blanc mange, and ice-cream.

I make no doubt that the eminent parties above named all partake of novels in moderation-eatjellies-butmainly nourish themselves upon wholesome roast and boiled.