Homemade Grand Marnier: I learned how to make this from my friends! Grand Marnier is an orange flavored liquor. I would consider it a staple for any home bar. It tends to be pretty expensive, so this homemade version is significantly cheaper and tastes better. It’s really simple to make, but it takes a little bit of waiting. So I’d recommend you get yourself some oranges and make it this weekend, then you can enjoy it all summer long! It also makes really great gifts.