Hard Seltzer Made Easy - Brew Your Own
byo.com › article › hard-seltzer-made-easyCheck solution strength and adjust as necessary; the pre-boil gravity should be ~1.031 OG (7.6 °Plato). Continue heating until solution is boiling and boil for 20 minutes. Check solution strength and dilute as necessary with RO or distilled water. Cool to 64 °F (18 °C) and transfer to fermenter. Add yeast and first addition of nutrients.