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For warmer days, a flash brew ice coffee kit (the optimal brewing method) for all your ice coffee needs. Makes enough coffee to share.
Hario means "The King of Glass." Since 1921, this Japanese company has been manufacturing glassware of the highest quality.
From our friends at OX, here is a ratio you can try:
30g ground coffee (med/fine)
165g Ice (in the carafe)
355g Hot Water
2:30min total brew time
The ratio can be increased proportionally.