What is the filling in chocolate sugar wafers made with?

The filling in chocolate sugar wafers, also known as chocolate wafers or sandwich cookies, is typically made with a combination of sugar, vegetable shortening, cocoa powder, and vanilla flavoring. The exact ingredients and proportions can vary depending on the brand and recipe. Some variations may also include additional ingredients like corn syrup, chocolate chips, or nuts. The filling is usually creamy, smooth, and has a sweet chocolatey taste that complements the crunchy outer wafers.