Residual sugar or RS is usually labeled in g/L of wine. This value indicates the sugar that is left in the wine after fermentation has taken place. Fermentation is the process by which sugar in the wine is converted to alcohol.
SO, WHY DOES THIS MATTER?
The alcohol in the wine is processed through your liver. The sugar in the wine is processed via the pancreas. Wines with little to no RS will not raise your blood sugar levels and therefore will not stimulate a pancreatic response. This is why wine with no to low RS are considered Paleo an d KETO and therefore can be considered a healthier option. To buy wines that fit this profile, click on my BUY WINE button at the bottom of my home page.
Unfortunately it is a practice in the wine industry to add sugar to wine. This has a 2-fold effect. It increases the alcohol content of the wine and it makes the wine sweeter to better fit the American palate profile. Unfortunately this also significantly increases the calorie content of the wine and raises your blood sugar!