Cusinium Glass Teapot Kettle with Infuser Review

We purchased the Cusinium Glass Teapot Kettle with Infuser so our reviewer could test it in her kitchen. Keep reading for our full product review.

Looking for a stylish teapot that can brew both hot and cold tea? The Cusinium Glass Teapot is made from handblown borosilicate glass. Not only does it look great in a kitchen, but it’s able to withstand sharp temperature changes. That means this teapot is safe to use on the stovetop—you can even boil water directly in it. It can also be used in the microwave (with the stainless steel pieces removed) and it can go in the dishwasher for a quick cleanup. Assessing components like design, performance, and ease of cleaning, we put the Cusinium Glass Teapot to the test in our kitchen. Read on to see whether it’s worth buying.  

Design: Superb form and function 

The instructions are clear and easy to follow. Diagrams are included to help you accurately prepare both hot and cold tea. We appreciate that the teapot comes with a chart that indicates the required water temperature and brewing time for various types of tea. Other teapots that we’ve used haven’t provided this information and it was a bit of a guessing game. 

The Cusinium Glass Teapot is very well-crafted. A large, rounded handle gives it a comfortable grip and the lid is snug and secure, so you don’t have to hold it down while you pour. It’s also designed to stay cool to the touch, so you won’t burn your fingers in the process. The spout releases the tea in a smooth stream and it doesn’t spill at all. This pot can make up to four cups of tea. Since we live in a two-person household, the smaller size it perfect for us. It might not be large enough for a whole family of tea drinkers, however.

Since this teapot is marketed as a gift set, it comes with a few accessories that make the tea-brewing process even more convenient. A removable sleeve is included to help keep your tea nice and warm. Strictly from an aesthetic point of view, we preferred the look of the teapot without the sleeve on it, but it did keep our tea significantly warmer when we used it. The set also includes a bamboo coaster, so you don’t have to worry about the hot kettle damaging any surfaces in your home. If you’re looking for tips on how to brew a better pot of tea, be sure to check out the complimentary ebook that will be sent via email. 

Performance: Excellent 

Our first test for the Cusinium was a pot of loose-leaf earl grey, our favorite blend of black tea. As the instructions advised, we began by washing all of the components in warm water with a mild dishwashing detergent. We then placed our loose tea leaves in the filter, measuring out one teaspoon for every cup (as directed on the tea container). Although the instructions say that the Cusinium is safe to use on the stovetop and water can be boiled directly in the teapot, we decided not to take any chances. Although the majority of users rave about this product, we did read some reports about the pot cracking and breaking, causing hot water to spill out in some instances. Instead, we measured out 3 cups of water and put it in a pan to boil. 

Since black tea requires a temperature of 200 to 212 degrees for optimal brewing, we used a digital thermometer to gauge the water. When the water reached its boiling point, we brought the pan over to the sink and poured it into a measuring cup with a spout before transferring it to the teapot. This made the pouring process easier and prevented us from accidentally spilling any of the hot water. After filling the teapot with the water, we put on the lid and allowed the tea to steep for about four minutes. (The recommended brewing time for black tea is three to five minutes.) 

The resulting tea had the perfect amount of flavor. Since it wasn’t overly strong, we decided to leave the infuser in a bit longer—even though the instructions say to remove it after brewing. We were very impressed with the consistency of the tea. The filter did an excellent job of straining the loose tea leaves and we found no sediment whatsoever. 

Here’s another major bonus: The Cusinium Glass Teapot can also be used in the microwave—just be sure to remove all of the metal parts first. We had a good amount of tea left over after our first mug, so we warmed the pot up in our microwave and the second round still tasted great. 

Ease of cleaning: Dishwasher safe 

Since all parts can go in the dishwasher, the Cusinium Glass Teapot couldn’t be easier to clean. For a more thorough washing, the manufacturer recommends that you remove the lid, filter, and metal ring and put them in the dishwasher separately. The pot is simple to clean by hand as well—just use warm water and a mild dishwashing detergent. All of the parts come apart and reattach very easily. 

Price: Slightly high 

At $35, the Cusinium Glass Teapot is one of the more expensive glass teapots out there. It does have some convenient accessories—like a sleeve and bamboo coaster—that make it worthy of its higher price tag, though.

Cusinium Glass Teapot Kettle with Infuser vs. Hiware Glass Teapot Kettle with Infuser

Retailing for roughly $18, the Hiware Glass Teapot Kettle with Infuser (view on Amazon) is just half the price of the Cusinium. The elegant pot is slightly larger, too—it makes four to five cups of tea. It also has a non-dripping spout and is made from heat-resistant borosilicate glass, which means it is stovetop, microwave, and dishwasher safe. When it comes to performance, the Hiware Glass Teapot is pretty much on par with the Cusinium. The budget teapot is lacking a few helpful features, though—it doesn’t include a sleeve or coaster.