This insulated tea flask with built-in infuser has become one of our go-to flasks for ripe puerh and aged white tea, especially when we're out at markets. The 820ml stainless steel thermal flask features a mechanical temperature gauge on top that shows you exactly what's happening inside – no batteries, no guessing.
What makes it handy:
The watch-style temperature display is surprisingly useful. You can see when your water's cooled down enough for a second steep of that aged white tea, or if it's still hot enough for another round of shou puerh. It uses German mechanical internals (the same tech they use in pressure gauges), so it's pretty reliable.
The 316 medical-grade stainless steel interior is a step up from standard 304 steel – it handles acidic teas better and doesn't pick up flavours over time. We've been brewing dark teas in ours for months and it still rinses clean.
How we use it:
The spout has a built-in filter, so when you pour, the tea comes out clean without any leaves. You can even leave the tea basket in and just pour directly – the filter does the work for you. Very practical.
Tea-to-water ratio:
For best results with this insulated tea flask, we use about 4g of tea (roughly 2 teaspoons) for the full 820ml capacity – that's a 1:200 ratio. This gives you room for multiple steeps throughout the day.
Getting the best flavour:
Here's a tip we always use – rinse your tea first. Add your tea leaves to the basket, pour in hot water to rinse the leaves and warm the flask, then pour that water out. Now add fresh hot water for your actual brew. This wakes up the leaves and gets rid of any dust, plus it pre-warms the flask so your tea stays hot longer.
The flask keeps things hot for 6-8 hours, which makes it ideal for all-day use. Pop your tea in before you leave home, and it's still warm when you get back in the evening.
Capacity:
- Flask: 820ml (enough for 5-6 cups)
- Included cup: 100ml
- Height: 26cm
Works particularly well for:
- Ripe puerh: Stays hot enough for multiple steeps throughout the day
- Aged white tea: The temperature gauge helps you hit that sweet spot around 85-90°C
- Tasmanian Lavender Puerh: Our award-winning blend works beautifully with longer steeping times
- All-day brewing: Perfect portable tea flask for taking tea to work or keeping at your desk
- Market days: We use these at our Salamanca Market stall
- Day trips and camping: Lightweight enough to carry, holds temperature for 6-8 hours
- Car trips: The handle stays cool and it fits in most cup holders
- Gift giving: Comes in a decent box, makes a practical present for tea drinkers
Some practical notes:
Leave about 2-3cm of space at the top when you fill it – if it's completely full, opening the lid can cause a bit of pressure spray. Also, while it seals well, we'd keep it upright when it's full of hot water rather than lying it down in a bag.
To clean it, we usually just rinse ours out with hot water between uses.
Care tips:
- Rinse the tea basket after each use – tea oils can build up if you leave it
- The mechanical temperature gauge doesn't need any maintenance, just don't submerge the whole lid in water for extended periods
- Before first use, give everything a good wash with hot soapy water
This isn't designed for delicate green teas or anything that needs precise lower temperatures – it's really built for teas that like hot water and can handle longer steeping times.
