How do I track what I ate on a food tour?

I went on a Chocolate Tour today and I have absolutely no idea how to track it.

Here's what I had: 1 chocolate chip cookie (tasted like a slightly more luxurious standard ccc...maybe it had some extra butter in it, but probably pretty similar to a regular ccc), 1 medium size piece of dark chocolate sea salt bark (about half the size of the palm of my hand and very thin), 3 truffles, and 4 tastes of gelato (probably a teaspoon or less of each)

I estimated it at about 400 calories. What do you think?

Thanks!