The phrase "drinkable smoothie" means a type of blended drink that is easy to consume through a straw, usually made with fruits, vegetables, or yogurt. Full definition
They have a thicker base compared to the traditional drinkable smoothie and are served in a bowl with a variety of often colorful and decorative toppings. (tarasmulticulturaltable.com)
A smoothie bowl requires a bit more substantence than a drinkable smoothie through a straw. (giveitsomethyme.com)