It’s not nearly as much sugar added as I expected. Jif, which seems to be the most popular brand, has 2 grams of added sugar in a 33 gram serving, for a total of 3 grams of sugar (peanuts seem to naturally produce some sugar). Comparing that to Costco’s Kirkland Select natural peanut butter, which only has peanuts and salt for ingredients, a 32 gram serving has 1 gram of total sugar. So the total sugar Jif adds is twice as much as would naturally be present, but still makes up only 6% of the serving. It’s sweeter, but not dramatically sweeter. It’s not like it’s been turned into Nutella, which has 19 grams of added sugar in a 37 gram serving, or 51% of the serving.