What Is a Teku Tasting Glass? (Stemware Specs)
A Teku is a stemmed beer-tasting glass with a tulip-like bowl and a rim that narrows slightly. It is made to help you see a beer, form a head of foam, and notice its aroma. A common model holds about 420 mL to the brim, but exact capacity and dimensions vary by model.
A common mistake is to treat the listed capacity as the amount to pour. A 420 mL brim capacity does not mean you should fill the glass to the rim: a typical 330 mL serving leaves room for foam and aroma. That difference matters when comparing product listings or serving beer.
What is a Teku tasting glass?
A Teku is stemware designed for tasting beer, rather than a general-purpose pint glass. Its stemmed base, rounded bowl, and narrower rim are intended to support visual assessment and help gather aroma near the opening. The shape can aid tasting, but it does not guarantee a particular foam, flavor, or aroma result.
The glass was developed for beer tasting by Italian beer specialist Teo Musso and beer writer and taster Kuaska. Rastal is a prominent manufacturer, though other makers and model variants may be sold as Teku-style glasses. Check the maker and product listing when exact dimensions or care guidance matter.
The bowl is glass and is generally non-reactive with beer. The stem is useful for holding the glass without placing your fingers around the bowl. That can reduce fingerprints and direct hand contact, but it does not stop the beer from warming over time.
A Teku is not cookware or heat-resistant serving ware. Unless the manufacturer explicitly rates a specific model for a use, do not put it on a stovetop or in an oven, or use it for hot liquids.
Teku glass material, capacity, and dimensions
Specifications describe one particular model, not a universal standard for every glass sold as a Teku. Common listings give a capacity near 42 cl and dimensions around 205 mm high by 75 mm at the bowl’s widest point. Use the exact product listing for a final fit or purchase decision.
| Specification | Commonly listed figure | How to interpret it |
|---|---|---|
| Nominal capacity | About 42 cl, or 420 mL | Often the brim capacity; check the listing |
| Typical beer serving | About 33 cl, or 330 mL | Leaves headspace for foam and aroma |
| Overall height | About 205 mm | May vary by model |
| Maximum bowl diameter | About 75 mm | Usually the bowl’s widest point |
| Material | Glass | Confirm the product description for the exact model |
“Brim capacity” means the amount the glass holds when filled to its edge. It is different from a comfortable serving volume. If a listing gives capacity but does not say how it was measured, do not assume it is the recommended pour size.
The tulip-like bowl widens and then draws in toward the rim. This gives you room to observe the beer and its foam, while the narrower opening can help direct aroma toward your nose. These are design aims, not a promise that every beer will smell or taste stronger in a Teku.
There is no single Teku temperature rating, oven-safety rating, or thermal-shock rating that applies to every model. Do not infer one from the glass’s shape or capacity. If a product page does not give a rating, treat the glass as ordinary glassware and avoid sudden temperature changes.
Prepare the glass before serving
A clean, odor-free glass helps you assess the beer without interference from residue or lingering smells. Before pouring, check the rim and bowl for chips or cracks, then wash and rinse the glass well. Follow the maker’s care instructions for dishwasher use and temperature exposure.
- Inspect it. Look over the rim, bowl, stem, and base for chips or cracks. Do not serve from damaged glassware.
- Wash it. Use the manufacturer’s instructions. Rinse thoroughly so detergent residue does not remain.
- Check for odor. A clean glass should not smell of soap, food, or a cupboard. If it does, rinse and wash it again.
- Avoid abrupt temperature changes. Do not chill a warm glass suddenly or pour hot liquid into it. A sudden change in temperature, or an impact, can crack or break thin glass.
A cold glass is not required for every beer, and no one temperature suits every serving. If you choose to chill the glass, do so without exposing it to a sharp temperature change. A manufacturer’s instructions take priority over general serving advice.
Practical serving situations
These examples show how the glass’s capacity and shape affect a pour. They are serving scenarios, not controlled tests or claims that one glass improves every beer.
| Situation | Practical approach | Why it fits the Teku |
|---|---|---|
| A 330 mL bottle or can | Pour steadily, leaving room rather than filling to the brim | The remaining headspace can accommodate foam |
| A highly carbonated beer | Pour more gently and pause if the foam rises quickly | Helps you control the head instead of overflowing |
| A beer with little foam | Pour at a suitable angle, then straighten near the end | Lets you adjust the head to the beer |
| Comparing beers | Use clean, odor-free glasses of the same type | Reduces differences caused by residue or glass shape |
The same 330 mL pour may create different amounts of foam in different beers. Carbonation, serving conditions, and pouring technique all affect the head. The glass provides room to manage it; it cannot control those factors by itself.
Pour beer, manage foam, and taste
A controlled pour helps you see the beer and its foam without spilling. Start with the glass angled and pour steadily down its inside wall. As the glass fills, bring it upright to form a head, adjusting the pour to the beer’s carbonation and style.
- Hold the glass at an angle.
- Pour steadily along the inner wall rather than straight into the bottom.
- Near the end, straighten the glass to build a controlled head.
- Stop before the foam reaches the rim.
If foam rises too fast, slow or pause the pour. If the beer produces little foam, you can still complete the pour; the glass is designed for tasting a range of beers, not just those with a large head. Avoid treating a specific foam height as a fixed rule for every style.
Look at the beer and foam before tasting. You can then gently swirl the glass if appropriate to release aroma. A gentle swirl is a tasting choice, not a required step; use care so beer does not splash from the bowl.
Hold the glass by its stem when practical. This keeps fingers off the bowl and may help limit direct hand warmth and fingerprints, but the stem does not keep the beer at a set temperature. Sip while the beer is at a temperature that suits your preference and the beer’s serving guidance.
Cleaning, inspection, and safe storage
Care depends on the exact glass and its maker’s instructions. Some product listings may allow dishwasher use, while others may give different guidance. Wash gently, avoid abrasive scouring, and store the glass so its rim cannot strike other glassware.
After serving, let the glass return gradually to room temperature. Do not rinse a warm glass with very cold water or expose a cold one to hot water. Abrupt temperature changes can cause thermal shock, which means stress from a rapid change in temperature that may crack glass.
Before washing or using it again, check for damage. Pay close attention to the rim and stem, where a knock may be easy to miss. If you find a chip or crack, stop using the glass; damaged edges can break further and may pose a cut risk.
When storing the Teku, give the rim space from nearby glasses, shelves, and hard surfaces. Avoid stacking it unless the manufacturer says that the model is designed to stack. A stemmed glass can be vulnerable to knocks, so a stable spot with room around it is a practical choice.
Choosing and using a Teku: key points
A Teku is a beer-tasting glass, not a special-purpose cooking vessel. Its commonly listed size is about 420 mL to the brim, with a typical 330 mL pour leaving headspace. Exact dimensions, dishwasher guidance, and any temperature limits depend on the model.
When buying, confirm the maker, capacity, height, and care instructions rather than assuming every Teku listing describes the same product. When serving, use a clean glass, pour with control, and avoid sudden temperature changes and impacts. Those steps matter more than treating a nominal specification as a performance guarantee.
Frequently asked questions
These quick answers clarify the most common questions about Teku glass size, use, and care. Exact measurements and care rules can vary by model, so check the manufacturer’s listing or instructions whenever a specific limit matters.
What does Teku mean in beer glassware?
Teku refers to a stemmed beer-tasting glass developed by Teo Musso and Kuaska. Its tulip-like bowl is intended to help with tasting, aroma, and visual assessment.
How much does a Teku glass hold?
A common nominal capacity is about 42 cl, or 420 mL, to the brim. Capacity varies by model, so check the product listing.
How much beer should I pour into a Teku?
A typical serving is about 33 cl, or 330 mL. The remaining space leaves room for foam and aroma, though the best pour depends on the beer and its carbonation.
What are the usual Teku glass dimensions?
Commonly listed dimensions are about 205 mm high and 75 mm across at the bowl’s widest point. These are approximate figures, not universal measurements.
Is a Teku glass only for beer?
It is designed for beer tasting. You can use it for another cold drink if you wish, but its shape and stem are intended for tasting rather than cooking or hot-liquid service.
Can I put a Teku glass in the dishwasher?
Only if the instructions for that exact model allow it. Follow the manufacturer’s care guidance, and avoid assuming that all Teku glasses have the same dishwasher rating.
Can I put a Teku glass in the oven or microwave?
Do not do so unless the manufacturer explicitly rates that exact model for the appliance. A general Teku shape or capacity does not establish oven or microwave safety.
Can I pour hot liquid into a Teku glass?
Do not use it for hot liquids unless the maker explicitly rates that model for the purpose. Sudden temperature changes can crack or break glass.
Why does a Teku have a stem?
The stem lets you hold the glass without gripping the bowl. This can reduce fingerprints and direct hand contact, but it does not prevent the beer from warming.
How should I clean and store a Teku glass?
Follow the maker’s cleaning instructions, rinse away detergent, and avoid abrasive scouring. Store it where the rim and stem will not knock against other glassware.
(This article was written by one of our staff writers, Julian R. Hayes. Visit our Meet the Team page.)
