How to make natural sea sponge cake: 1,000-year-old sponge cake recipe from a British grandmother

The recipe was first discovered by a 17th-century merchant, William Wilberforce, who also named it “the sea sponge” (or, in the English version, the “sea grass”).

But it has since become a popular natural-foods item, and its popularity has grown since its original publication in 1836.

Today, the recipe is the basis for countless cakes, pastries, and other baked goods, with many versions of the cake being available from supermarkets and even online.

Here’s how to make your own sponge cake using a simple, inexpensive ingredient: 1.

Peel, chop and slice the sea grass into a medium-size strip.