In a large pitcher or mixing bowl, combine the lemonade and alcohol. Taste and, if needed, stir in simple syrup to balance the tartness.
Insert a funnel into each freeze pop bag and fill with the mixture, leaving about ½ inch at the top to allow for expansion.
Seal each bag and freeze for at least 8 hours or overnight.
Notes
Remember: Alcohol doesn't freeze at the same temperature as water, so it can slow down the freezing process, and won't fully freeze in a standard home freezer. An 80-proof alcohol (40% ABV) freezes at -16°F (-27°C), while most home freezers are set to about 0°F (-18°C). To keep your boozy freeze pops solid in a standard home freezer, aim for no more than 10% alcohol by volume (ABV). This usually means using 1 part 80-proof (40% ABV) alcohol to 7 parts lemonade — or about ¾ cup (6 ounces) alcohol per 6½ cups (56 ounces) of liquid. If you add more alcohol, your pops may stay slushy or not freeze at all. Flavors & alcohol combinationsIf you want to keep things simple, choose one kind of alcohol and then choose flavors that go with that one. Vodka is a good choice — it's crisp, goes with lots of flavors and balances with the lemonade. Here are some easy pairings you can try:
Plain lemonade: vodka, gin or bourbon
Strawberry or raspberry lemonade: vodka or gin
Peach lemonade: bourbon or rum
Mango lemonade: rum or tequila
Limeade: tequila, rum or vodka
Blueberry lemonade: vodka or gin
Watermelon lemonade: tequila or vodka
Blackberry lemonade: gin or bourbon
Pink lemonade: vodka or rosé wine (for a low-ABV version)
Fruit punch: rum or tequila (or vodka for a cleaner finish)