Solution: La Colombe, Philadelphia, is conducting a test marketing of self-heating aluminum coffee cans. Just twist the bottom, wait two minutes, gently shake, pull the tab on the lid and get 10.3 ounces of coffee at about 130 degrees.

In other words, Joe is a hot but not hot McDonald’s.

The secret is a small patented heater built inside a shelf-resistant jar. It was developed by a company called HeatGen, which monitors exactly how it works, not just explaining it as a solid reaction that is safe and recyclable. Other companies without much success tried the idea of ​​self-heating.

Even La Colombe CEO Todd Carmichael, who has worked with HeatGen developers for five years, isn’t sure there’s a market for that.

Carmichael, an avid craftsman who became a pioneer in innovations such as cold latte on bottling and cream latte in jars, said in an interview that he was a cautious optimist.

“I want to see how people react,” he said. “I’m experimenting with technology and experimenting with people. Is it a fashion, a novelty or a trend? I want to see how it fits into people’s lives. ” Carmichael himself could have used something like this during his bold research, including a 39-day 700-mile walk to the South Pole in 2008.

Carmichael said that soon the self-heating cylinder will appear for the first time on a large scale in Wegmans stores.

Two varieties – plain and milk with sugar – which I tried, showed good results, gave me hot coffee, as advertised. I didn’t want to drink hot coffee straight from the jars because the tongue was distracting. I just poured it into a mug and it tasted like … La Colombe coffee.

However, $ 10 for two banks is a bit high.

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