Harina Tostada – Chilean Toasted Wheat Flour Harina Tostada by Oso is wheat flour toasted until it turns golden and nutty. It is a Chilean pantry staple with no real equivalent on a US supermarket shelf, and the smell of it is the whole point. The classic way to use it is ulpo: stir it into cold water with sugar and drink it. It is also spooned over fresh watermelon in summer, and it goes into baking when you want that toasted note. The bag is 17.64 oz (500 g). Why You'll Love It Chilean toasted wheat flour by Oso Nutty, golden, and aromatic The base for ulpo Classic over fresh watermelon 17.64 oz (500 g) bag Fill the rest of the pantry from our baking collection, add Sopaipillas Mix, or set the table for Fiestas Patrias. About Oso Oso is a Chilean brand of flours and grain staples.