Costa coffee is fruity and watery. Repugnant.
Nero is the best but Nero > Starbucks >>>>>>>>>>>>>>>>>>>> Filfy Costa
[edit to add]
Plus the coffee I make at home is better than any of them. I've recently perfected my vanilla soy latte game. I can also do an amazing sugar-free frappuchino using Erythritol that tastes just like Starbucks
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My speciality is a classic whole milk vanilla latte though