I don't try to match Starbuck's named flavors, but I like Starbucks-ish coffees...sweet and creamy.
Here's one I use often, all FA flavors. It's a rich, creamy, sweet, lightly coconut, 'fancy' coffee flavor:
SWEET COCONUT LATTE (for those who prefer percentages)
1% Coffee Espresso (or 0.5% for just a tint of java)
0.5% Coconut
0.5% Almond
0.5% Butterscotch (Caramel works okay if you don't have B'scotch)
0.5% Vienna Cream
0.5% Fresh Cream
0.5% Vanilla Tahiti (Vanilla Classic works nearly as well)
For the drops-inclined: Use the same kind of syringe/dropper for each flavor to get same-sized drops. Use 2 drops of Coffee Espresso, 1 of each of the others (8 drops total). Add 3ml of your nic base for very strong flavor, or 4ml of your nic base for normal strength, or 5ml for light flavor. (If you add 3-4ml, you can try it and add more base if you want it lighter flavored.)
In either case, shake it, set the closed bottle in a cup of hot tap water until it's very thin consistency, shake it more, and vape fresh.
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I mix tiny batches and vape them fresh. When I like a recipe with many flavors and small percents, save time in the long-run: Mix a batch of the flavorings alone, keeping the ratios the same. For example here, 10 drops of Espresso, 5 of each of the others. Label it "Sweet Coconut Latte Flavoring" and use it as you would any other flavoring. Then you can make the identical juice quickly later, with just 1 flavoring bottle.