The way I remember it is that this recipe came from Grammie Stevens. I think it must have been on a one of the product wrappers--you will see why when you read the ingredients.
Brands: IMOHO, this does not taste nearly as good if you don't use Ritz crackers and the Nestlé ® Toll House ® Semi-Sweet Chocolate Morsels. The other brands just don't cut it. Also, I have used the low-salt crackers and they are OK, but there is something about the salt on the crackers that can't be beat in the recipe.
Baking NOT: Yes, this is a no-bake recipe and resembles fudge in taste.
Coffee: It is OK if you do not use the entire mug. It is important that the coffee is hot and that you don't pour in too much. If you pour in too much and make the crackers soggy, your cake will be soggy as well. For instance, in moister weather, you may use less coffee. You want the cake to be stiff, not soggy.
One of my family friends made this when they were young and apparently, they never got the instructions because they baked and burned it. Another family friend made it and she had gotten the recipe, but told my sister she was not allowed to make it again because it was too dry and her mother would not let her do it because it used too much coffee. As it would turn out she'd used a cup of coffee grounds, so there was no liquid in it. Ugh! So, it's important to read and understand the diredtions!