Tea Blog

It’s National Hot Tea Month. What better time to review a handy new tea product?

New accessories for preparing and enjoying tea are coming out every day. Recently, I was asked if I wanted to try one of these products and, thinking it would be a good way to help out fellow tea drinkers, I said “Sure!” They let me choose which one to test, so I picked what I thought looked the most like something I could actually use on a busy morning.

Product Under Review:

Our featured item today is the Copco Stainless Steel Travel Tea Infuser Mug, engineered by a Wilton Products Company.

About the Design & Build:

First thing I did after the travel mug arrived was take it completely apart. The individual components were a bit stiff at first but not too difficult to manage. The most challenging aspect was removing the cap off of the internal infuser basket. The cap handle is slick and lacks a textured surface; a few rubberized indents would allow for a much better grip, especially when trying to remove it along with the wet basket from the mug after steeping when internal suction has built up.

A — Infuser basket
B — Infuser basket cap
C — Insulated stainless steel cup body
D — Main cap that holds the infuser assembly

This particular tea mug is a rather enigmatic item. On one hand, it seems to have been designed by engineering teams trying to be very attentive to daily usability, loading up the mechanism with a number of clever structural features. On the other hand, they appear to have been excessively attentive, since this travel item seems to have too many moving parts. For example, it has a built-in piece on the lid that covers the drinking opening, which then flips up to become a handle or can be snapped open on the opposite side of the lid — clever, but not a massive selling point for my personal routing.

A — Main cap with the drinking hole fully sealed
B — Main cap with the integrated hole cover/handle raised up
C — Main cap with the handle snapped securely down for drinking

The interior chamber of the mug, the main cap, and the infuser cap are constructed from heavy-duty plastic. Be absolutely sure to wash these thoroughly between brewing sessions to avoid the build-up of dark tea oils and residue that could end up altering the flavor profiles of delicate blends. I will warn you, though, that cleaning all the way down to the bottom of the narrow interior cylinder is difficult unless you have particularly small hands or a dedicated bottle brush.

On-the-Go Tea Preparation:

I think the product designers envisioned commuters using this thermal vessel in the following sequence:

You wake up in the morning, steep loose tea directly inside the insulated thermal body, twist the specialized lid mechanism to the “Stop” setting (which physically blocks off the infuser holes from the hot water), and drink your fresh brew safely while driving to the office.

Unfortunately, a few traditional tea preparation realities were overlooked. For instance, I love to enhance several of my morning black teas with a splash of milk and a bit of sweetener, such as rich Assam, hearty English Breakfast, classic breakfast style PG Tips, or traditional bold buy Typhoo British tea bags. Because the tea leaves remain inside the main cylinder throughout the drive, adding these elements before the infusion is fully stopped is highly impractical.

No worries, though. The design makes it fairly easy for you to convert this into a straight travel thermos by simply unscrewing the basket holder completely from the lid assembly. That functions fine, but it raises the question: why purchase a specialized loose-leaf infuser mug when a standard, classic thermal mug does the job?

Speaking of the steel basket, it is relatively small compared to standard kitchen infusers, featuring micro-perforations that don’t allow for a high volume of water circulation around the leaves. I actually own a different brand that is slightly worse, so this isn’t the worst on the market. My husband suggested that I could just put a standard teabag inside the steel infuser basket. Sure, you could, but why bother with the extra cleanup? The only reason would be to utilize the mechanical “Stop” feature. Otherwise, it is far easier to steep your favorite bagged tea in a regular mug, fix it up with your favorite additions like fresh milk, natural honey, fresh lemon, or a splash of your favorite sweetener, and then pour it in.

A — The Copco travel mug’s targeted infuser basket
B — A secondary alternative basket with a more restrictive design

I’m not saying this travel unit isn’t useful around the house or at your office desk. I can easily brew my afternoon blend, seal it up, and enjoy a hot tea that stays at a perfectly drinkable temperature for an hour or two — easily lasting through a morning staff meeting. However, when it comes to taking it on the road, the base did not comfortably fit into the standard-sized center console cupholder in my vehicle.

Putting It to the Test: The Steep Test

To see how it performs under pressure, I ran a dedicated brewing test using premium loose leaf Chai Green Tea. I selected this specific blend because I generally prefer green teas unenhanced or with a tiny bit of simple sweetener, making it a great option for straight drinking while mobile.

I placed a measured, modest amount of dry tea into the basket. Because this particular chai blend features large, beautiful leaf pieces and whole botanicals, confining them within this narrow steel compartment was a bit tight. Here is what it looked like before adding water:

I poured just under two cups of hot water into the stainless container, turned the internal selector dial to the “Steep” setting, and set our kitchen timer for exactly three minutes. After the infusion completed, I transferred the liquor into a clear glass mug so we could evaluate the extraction quality.

While the color developed well, the flavor profile felt thin. The distinct warming spices and aromatics that differentiate a rich chai from standard bulk green tea loose leaf varieties were noticeably muted. Compared to my previous experience testing this exact blend loose in a traditional cast-iron Japanese Tetsubin teapot, the restricted steeping environment inside the travel cup yielded a less complex cup.

Here are the expanded green leaves inside the small basket post-brew:

To verify my theory, we ran a quick second infusion with these exact same damp leaves inside a standard ceramic teapot, allowing them to swim completely loose in the water. This second cup brought out far more authentic chai character, allowing the trapped baking spices to properly express themselves.

Final Review Summary:

Overall Score: 2.5 out of 10 Teacups

The Upsides:

• The visual profile is sleek, contemporary, and modern — appealing to commuters who value an urban aesthetic.
• Offers moderate portability for individuals who want to pre-brew loose leaf options at home, add their creamers, and carry it as a sealed container.

The Downsides:

• The infuser basket is structurally limiting (too small for premium whole-leaf expansion, positioned high up in the water column, creates a messy cleanup on the go, and can lead to a weaker extraction).
• The wide base base did not easily slide into my vehicle’s console cupholder during initial tests.
• Available in a very limited color range, primarily a bright tea-leaf green.
• Removing the infuser cage from the lid assembly can be slick and tricky.

[Author’s Update: I re-tested the base fit in my car’s primary console on a second trip and managed to get it to lock into place, though it was an exceptionally snug squeeze.]

Disclaimer: The product reviewed here was graciously provided by the manufacturer for evaluation purposes. All ratings, field testing, and performance notes are completely objective. Completing this review, performing multiple extraction tests, and formatting the photography required approximately 16 hours of dedicated testing time.

Check out the lifestyle features on Tea Time with A.C. Cargill for more deep dives into hardware and new product reviews!