Private Lab Amagaeru Spark
⏳ Drinking Window
Typically best enjoyed fresh within 1–2 years of release, served well-chilled.
🍽️ Food & Wine Pairings
Fresh raw oysters, vegetable tempura, light fruit tarts
✨ Technical Specifications
Part of Aramasa's avant-garde 'Private Lab' series, 'Amagaeru' (meaning 'Tree Frog') represents a playful yet technically demanding boundary-pushing experiment in sparkling sake. Crafted by the visionary Yusuke Sato, this sake is brewed using the traditional Kimoto starter method and the historic Kyokai No. 6 yeast, which was originally isolated at Aramasa in 1930. Amagaeru undergoes a natural secondary fermentation in the bottle, resulting in an exceptionally lively, highly carbonated, and slightly cloudy (thin-nigori) brew. Opening a bottle is famously an exercise in patience, often requiring slow, careful venting to prevent a joyful eruption. It delivers a vibrant, wine-like lactic acidity, delicate sweetness, and a refreshing effervescence that mimics fine pét-nat or sparkling wine.
🍾 About the Producer
Established in 1852 by Uhei Sato in Akita Prefecture, Aramasa Shuzo stands as one of Japan's most revolutionary and revered artisanal producers. The brewery earned historic distinction in 1930 when its in-house culture was isolated as Kyokai No. 6, the oldest surviving yeast strain in active distribution. Under eighth-generation kuramoto Yusuke Sato, who took over in the late 2000s, Aramasa embarked on an uncompromising renaissance. Sato committed strictly to pure Junmai brewing, utilizing exclusively local Akita-grown rice cultivated without chemical pesticides, including over 30 hectares farmed in the Uyashinai district. Reviving traditional Edo-period techniques, all fermentations rely purely on indigenous lactic bacteria via the kimoto method and take place entirely in wooden cedar vats (kioke). Fermented using only pristine soft local mountain water and Kyokai No. 6, Aramasa's sakes—such as the iconic unpasteurized No. 6 series, the terroir-driven Colors collection, and the experimental Private Lab bottlings like Amaneko—are globally benchmarked for their electrifying acidity, pristine structural tension, and vinous elegance.
🍷 ABV
8-10%