We looked for mugs that delivered on their stated promise: did they keep coffee at a pleasant temperature over an extended period of time? but it does seem there’s a sweet spot between just above body temperature and just below our heat threshold (around 150-160°F, but that’s also not a super scientific range and really depends on your own personal preferences). This friendly mug will even tell you hello and goodbye, so there's no confusion about whether it's on or off. Although both the Ember and the Ember Travel use the same app to control temperature, the Ember Travel displays temperature readings in real time (the Ember mug just has a light on the bottom that flashes different colors, which were difficult to remember and interpret). At one point, the National Coffee Association recommended a serving temperature between 180-185°F, and a few articles I read latched onto that range.

The Cosori kept coffee the hottest in our tests thanks to an effective warming plate and a simple lid. Its inner stainless-steel layers are separated by a chamber of a phase-changing material that turns from solid to liquid as it absorbs heat, and then back to liquid as it releases heat back through the steel to keep your drink warm. However sometimes due to situations beyond our control for example damage in post, your item may arrive in an unsatisfactory state. I’d argue you need a good gooseneck kettle to make a great pourover, or a decent machine to make great espresso at home, but you absolutely do not need a temperature control mug to enjoy coffee.If the mugs were on their chargers, most (except the OHOM and the Glowstone) were able to keep a consistent 135°F for four hours. VSITOO S3 Pro Temperature Control Smart Mug with Sliding Lid : This performed about as well as the Ember, but users could only pick temperatures in increments of nine and the app wasn’t as easy to use as Ember’s. Our smart mug allows you to set an exact drinking temperature, so your coffee is never too hot, or too cold. The difference between the Ember Mug² and a normal mug is that, anything can keep something “Hot”, but only the Ember Mug² can keep your favorite hot beverage at your perfect drinking temperature.

She has been cooking professionally since 2017 and has tested kitchen appliances and gear for Family Circle as well as developed recipes and food content for Simply Recipes, Martha Stewart Omnimedia, Oxo and Food52. The rate at which coffee loses heat is high when coffee is very hot, and then it slows down as it cools.

Streetwize 12V Heated Travel Mug with thermostatic control maintains the temperature of drinks at 60 degrees max, for tea, coffee, soup and more.

And I used an amber mug made by the folks at MANUAL, and I can’t say if these results would be the same if I tested in a porcelain or ceramic mug. He reviewed the Ember Mug in 2018, and admits that it’s a silly product, but that he likes it and accepts any and all teasing associated with that. The experts in the Good Housekeeping Institute Kitchen Appliances and Innovation Lab test heated mugs for heat retention, impact on taste and ease of use.

Personalised items will have to be produced first, which can take up to 4 business days depending on the item. The app for the Ember comes with preset temperatures for a variety of drinks: it’ll hold liquid at an ideal temperature for things like tea, and you can set your preferred temperature setting or just rely on one of the defaults already programmed. Always take a machine Coffee to work, but by time I've got in my truck, swapped parking spots with my car, done my checks and set off, the coffee is lukewarm so you have to drink it quickly, so then you feel awash. You can change your choices at any time by visiting Cookie preferences, as described in the Cookie notice.

Our caveat is that the mug is stainless steel, and it got dangerously hot when the plate was set to its maximum temperature, so use caution when drinking from it.This helps us determine whether users can actually have their drinking time interrupted and then come back to a warm cup of coffee.