Hard seltzer kits – brew your own hard seltzer at home

Hard seltzer is sparkling water with alcohol and fruit flavour, made by fermenting sugar with yeast and yeast nutrient. Here you will find complete hard seltzer kits that make 19 litres, or about 38 half-litre servings, at 5.2–5.8% ABV. All you need to add is water. You will also find kits without sugar, yeast nutrient, finings and starter kits with equipment.

What is hard seltzer?

Hard seltzer is a light, refreshing drink with a neutral base and fruit or berry flavour. The base is sugar, usually dextrose, which is fermented out completely. Because sugar lacks the nutrients found in malt, the yeast needs yeast nutrient to ferment cleanly. Flavour is added at the end, and the drink is carbonated in bottles or a keg.

How to choose a hard seltzer kit

	Handcraft Supplies	4-Day Hard Seltzer Kit
Makes	19 litres	19 litres
ABV	approx. 5.2%	5.8%
Yeast	Yeast and nutrient	Omega Lutra Kveik and Propper Seltzer
Fermentation	Ready in 2–4 weeks	3–4 days at 30 °C
Flavours	Mango & Lime, Lemon & Lime, Raspberry	Passionfruit, Mango, Raspberry, Apricot

Complete or without sugar: The complete kits, such as Lemon & Lime complete, include 2 kg of dextrose. If you already have sugar, a pack without sugar and 2 kg of dextrose will do.
Fastest possible: The 4-Day Hard Seltzer Kit uses Omega Yeast's Lutra kveik, which ferments cleanly in 3–4 days at 30 °C.
Your own recipe: Propper Seltzer is a yeast nutrient from Omega Yeast, sized for about 19 litres of sugar wash with an OG of up to 1.060. The book How to Make Hard Seltzer covers recipes and technique.

How to make hard seltzer

Dissolve the sugar in water and add yeast and yeast nutrient.
Let it ferment out. With Lutra Kveik this takes 3–4 days at 30 °C.
Clear the drink, add the flavouring and transfer to bottles or a keg for carbonation.

Frequently asked questions about hard seltzer

What do I need to make hard seltzer?

A complete kit and water, plus basic brewing equipment: a fermenter, a siphon and bottles or a keg. Startsett Basic covers the equipment for hard seltzer, extract kits and Fresh Wort Kits.

How long does it take to make hard seltzer?

With the 4-Day Hard Seltzer Kit, fermentation is done in 3–4 days at 30 °C. With the Handcraft Supplies kits, the drink is ready in 2–4 weeks.

How do I get crystal-clear hard seltzer?

Use a two-stage fining agent such as Super-Kleer K.C. with kieselsol and chitosan. It is recommended especially when you keg.

How do I carbonate hard seltzer in bottles?

For bottle conditioning you need sugar for a priming solution or carbonation drops, which are not included in the kits. If you keg, you carbonate with CO2.