How much sugar in a bottle of sherry?

Sherry has a wide variety and can vary anywhere from 5 grams per liter up to 200 grams per liter.

One teaspoon of sugar is equal to 4 grams.

One glass is considered to be 4 ounces.

One liter has 34 ounces.

So it could vary from about half a teaspoon to a top value of 25 teaspoons.