And what are your favorite sources?
I use sodastream (found a glass form), though in the past I have gotten a lot of San Pellegrino (maybe that was a sign I should haev refilled my 60 sodastream refills earlier). I can easily go through 2 refills a day.
I remember they can be used to help satiate/reduce appetite NEAR-TERM [and i have used them to occasionally kill consequential hunger pangs, esp in evening when coffee is not an option]
#1L San Pellegrino (33.8 fl oz, glass): S.Pellegrino’s own spec sheet lists ~4.8 g CO₂ per liter at bottling (±0.2 g). That’s about 2.4–2.7 “volumes” of CO₂ (2.44 vol if you convert 4.8 g exactly; a trade guide quotes ~2.68 vol as typical). (quantiperm)
#Two “full thrusts” on a SodaStream (1-2 s presses) for a 1 L bottle: SodaStream manuals say 3 short presses ≈ standard fizz. A standard 60 L cylinder contains ~14.5 oz (≈411 g) CO₂ and “makes up to 60 L”, i.e. ~6.8–7.1 g CO₂ per liter at standard fizz. Assuming 3 presses = that amount, 2 presses ≈ (2/3)×(6.8–7.1) = ~4.6–4.7 g CO₂ per liter—right on top of San Pellegrino. (SodaStream Support, Appliance House, The Home Depot, Target)
Bottom line
For a cold 1 L bottle, two firm 1-second SodaStream presses will land you very close to a 1 L bottle of S.Pellegrino in dissolved CO₂. If you want to nail it more precisely, use two presses on well-chilled water, cap immediately, and swirl once or twice to help absorption. (Temperature and how long you hold each press are the big variables.)