Sap tapped from our own birches in April, lightly sparkling, with the potassium and magnesium your sweat leaves on the bench. Made for the ice hole, the third round and the quiet after.
Sauna is *slow.* Three rounds and one icy dip take close to a litre of water and a good share of minerals from you. Most people pay it back with *beer.* We pay it back with *what* the *birches* *give.*
The main event. Birch roots pull it up from the ground in spring. Your sweat leaves most of it on the bench.
Lets a muscle unwind after the heat. Run short and your legs stay tight long after the last round.
Potassium's quiet partner. Keeps nerves and muscles talking when the cold water shocks them awake.
The trace the birch is known for. Small amount, real role, and very hard to find in a soft drink.
Open it on the porch, drink it cold, and let the steam leave you alone. The sauna is the ritual. This is just the can.
Most of the can is sap from one April tapping. The rest is berries, spruce and bubbles.
Nothing to keep you up after the last round. Sleep is the real point of the evening.
That covers the whole bill. A slice of rye bread carries six times more.
Potassium, calcium, magnesium, manganese. Pulled up from the ground by the trees.
The sap runs for about three weeks each April, before the leaves open. We take it all then.
Every batch checked by an outside lab for purity before it leaves the sap house.
Average soft drink values come from the five best-selling fizzy drinks we bought at the village shop in Hiljalahti in January. Per serving, as sold.
The stove is lit at dusk. Your heart rate sits near 60 and the lake outside reads 0.4°C. Enjoy the quiet while it lasts.
Skin temperature passes 40°C. Two to four million sweat glands open and start working to keep your core cool.
Thirty seconds in 1°C water. Blood vessels snap shut, heart rate jumps, and then a long, heavy calm arrives.
Heat after cold. Vessels open again, and your heart does the work of a brisk walk while you sit perfectly still.
Out on the porch in the snow. Potassium and magnesium have left with your sweat, and thirst arrives late.
Reach for beer now and you dry out further. Worst case, a broken night's sleep. Best case, a slow, heavy morning.
One can after the last round puts back water, 180 mg potassium, 60 mg calcium and 30 mg magnesium. No alcohol, so sleep stays easy.
Four quick inputs, no thermometer needed. We'll show you how much water and potassium to put back, and how many cans that means.
Roughly 75% of what you sweat out
Based on 190 mg per litre of sweat
A rule of thumb, not a prescription. Sweat varies a lot from person to person. Drink water too, and keep the beer for another night.
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Twenty thousand cans from one hillside of old birches. One drop, no restock. List members get the code an hour ahead.