if you are just guesstimating, you can use the manually enter foods. if you want to not fully enter the recipe, you don't have to. enter in the ingredients individually, where it asks you to type the recipe just enter a single keystroke so that there is something there, and be kind and don't share with the rest of us.
I wish they had a way to just put the info in without the recipe. Sometimes, if I eat with friends, I choose to take an educated guess without asking for recipe and amounts, etc. I would like to be able to just add the calories.