1 1/2 cups of non-dairy milk (I use Kirkland's vanilla soy)
Ice cubes to bring the total volume to 3 cups -this takes about one tray for me
2 tbs syrup - Torani, Monin, Santa Cruz, Ahlaska or Hershey's chocolate syrup, plain agave, or a combo.
2 heaping teaspoons instant coffee or powdered espresso (I much prefer the espresso, but plain ol' freeze dried coffee works fine).
1-2 teaspoons coconut oil or a big dash of vegan coffee creamer (optional. If you are watching fat or calories, you can totally omit this and still have a great, if less rich, drink).
To make a Peet's knockoff, throw in about a teaspoon of coffee beans.
You can add a banana (I love banana, chocolate syrup and a dollop of peanut butter (omit the coconut oil) for a breakfast substitute)
I've also added up to 3/4 cup of canned pumpkin or pumpkin pie mix to go with pumpkin spice syrup - vegetables in a frappe!