When I was a little kid back in 1950, there was a candy store across the street from my Grandmother's place. They made their own molasses sponge candy. My Grandmother used to bring back large chunks of sponge candy whenever she went to the store. It was not chocolate covered and I preferred it that way.
When I put a small piece in my mouth the candy would sometimes explode, then melt gradually. The flavor, texture and unique characteristics of the candy has always been stuck in memory. As a result, I haven't been able to find it in 60-plus years. Now that I have the recipe, you can bet I am going to make it.