Fill it 2/3rds full with orange juice. Adjust initial amount to taste.
Open a can of LaCroix. Plain, grapefruit, or tangerine. The flavour is mild.
Fill up the rest of the drinking vessel with LaCroix.
Enjoy your drink. Add more LaCroix as you drink, watering down the orange juice. Perfect for when I get home after walking my dog for an hour in summer. It doesn't feel as cloying as soda, I can't stand Coke anymore and Dr Pepper is heading the same way.
I "homebrew" my own soda for my kegs nowadays because it's really hard to find caffeine-free syrup that isn't absurdly expensive.
I do a 5 gallon keg (about 19 liters). I purchased some flavor emulsions from Bakto Flavors (https://www.baktoflavors.com/). Specifically I have the cola, key lime, and cherry emulsion.
I do the following mix:
9 tsp of the cola emulsion
6 tsp of the cherry emulsion
1 tsp of salt
6tsp of the key lime
8 grams of anhydrous citric acid (food grade)
10 grams of pure aspartame
Mix everything except the aspartame into a 5 gallon keg thoroughly with 5 gallons of water.
The aspartame likes to clump up and be really irritating, so I usually do a little slurry in a spot glass with some water and crushing it with a spoon. You'll probably still have some clumps but try and get them as small as possible. Pour that into the 5 gallon mix.
5 gallons of water is pretty heavy, but if you can shake it around a bit more to give it a bit more mixing.
Plug your keg into a CO2 tank at 19 PSI and let it carbonate for two days and enjoy. It tastes a bit more fruity than Cola, but it's pretty good and ends up working out to about $1.10 per gallon last time I computed it. Obviously you can adjust the flavors to anything you want, some people prefer sucralose over aspartame, and if you do caffeine then obviously add that in there as well (though getting pure caffeine is actually kind of hard to come by nowadays).
Take your preferred drinking vessel.
Fill it 2/3rds full with orange juice. Adjust initial amount to taste.
Open a can of LaCroix. Plain, grapefruit, or tangerine. The flavour is mild.
Fill up the rest of the drinking vessel with LaCroix.
Enjoy your drink. Add more LaCroix as you drink, watering down the orange juice. Perfect for when I get home after walking my dog for an hour in summer. It doesn't feel as cloying as soda, I can't stand Coke anymore and Dr Pepper is heading the same way.