Food Journal Question

I was wondering how I put something I had for lunch in the journal. I mean I get the jist of add obvious one name things, like cereal and beverages, but for lunch I had Chicken Premavera, leftovers from last night, how do I put that in. Do I put the individual ingredients in, like broccoli, carrots, pasta, chicken, and the ingredients in the sauce... or is there somewhere where I can put my recipe in and the serving amounts and it calculate the round about amount of calories for my journal!? Thank you!......