Using the values from the sweetness calculator, pour out some juice (you can save it to backsweeten with later) and add your sugar. Then, shake it all up!
Open your brewsy bag and pour the contents in. Seal your juice again and shake well.
Apply the airlock , then leave your container somewhere dark and warm (75-80°F is best) for 3 days.
After 3 days, move it to the fridge for 48 hours. You can remove the airlock and set the original cap on top of your drink. Be sure not to tighten the cap!
After 48+ hours in the fridge, your yeast will have fallen to the bottom of your container. Now, carefully "rack" your wine by pouring it off of the sediment into a different container. You can discard the sediment at the bottom — you won't want it in your final product. Then, pour a glass and give it a try!
Store the rest of your wine in the fridge, with the bottle cap still on loosely. Chill the wine before adding it to your cocktail.
To Make Your Cocktail
Add your chilled white wine, sparkling lemonade, and lime juice to your pitcher. If using limes, juice them and add to pitcher.
Right before serving, muddle 3/4 of your mint and add to the pitcher.
Add sugar to taste, if desired. Your lemonade may be sweet enough that you don't need any!
Mix well and pour into individual glasses.
Garnish with fresh mint and lime wedges, if desired.