When I ordered my Gram Weenie Pro stove I had the option of getting one of these mugs with it as a packaged deal, so I got the 10 cm mug. I had plans of using this as my dedicated mug whenever I carry my GSI Kettle with my Original White Box stove because of its light-weight and large capacity. The mug can also pull double-duty and can be used with the Gram Weenie Pro stove as a cook pot as well.
The Imusa mug weighs in at 2.5 ounces and measures 10 cm ( 3 7/8 inch) in diameter and 3 3/8 inches tall. It is made of thin aluminum and has a slightly rolled lip which adds a great deal of strength to the cup. It has a piece of aluminum molded in the shape of a handle and is attached to the side of the cup.
Like I said, the mug can be used as a cook pot with the Gram Weenie Pro stove, or simply as a light-weight mug. If the mug is used as a cook pot, a lid will need to be either acquired or made. A simple piece of aluminum foil should serve this purpose well, while maintaining a low weight. Last night I used the stove & mug set-up and it worked well. I did not use a cover over the mug, and used 1 ounce of HEET in the GWP stove which brought 2 cups of cold tap water to a boil in the mug in around 9 1/2 minutes.
Upon initial impressions, I am happy with the mug. It seems sturdy, it is light-weight and has a rather large enough capacity to be used as a cook pot. The only downfall that I can foresee is that the mug will be hot when hot fluids are inside the mug, so I will be sure to check this out more and report back. Also, more can be read about the stove and mug combo here, as well as a video to watch.
Update: I did mention above that the Imusa mug got hot when using to cook on, and that it took a while to cool down when using to cook in. I did not realize how easily it can become very hot though. This morning I decided to make a cup of coffee using the Imusa mug. I put the coffee in the cup, and brought some water to boil using my White Box Stove and GSI tea kettle. I poured the water in the mug, stirred the coffee up, and then reached for it. The mug (handle included) was HOT. So I let it sit for 2-3 minutes, still hot. I grabbed a paper towel to wrap around the handle and I was fine by doing this. However, once I attempted to sip from it, I realized quick like that the mug needed to cool way down before I could sip from it.
I will say that the temperatures outside are in the 80′s so I imagine things would be different if the temperatures were around 30. It would probably cool down a little faster in those conditions. So, I will have to rethink using the mug for drinking hot beverages from, or find a way to overcome this. I guess I could simply let it sit for a little longer and let it cool that way.
One other option that I came across the other night is the Snow Peak Hot Lips. I have no experience with them so I cannot say that they would work. First off, they are made for the Snow Peak products, so right off the bat, they may not fit. However, for $7 for two, and 0.3 oz each, they probably would not hurt to try.
So, just wanted to share this little extra on the mugs. I will still happily take the mug out with me and use it in as many ways as I can come up with, but this was pretty obvious even for a home test, and figured I should go ahead and share. If for some reason this changes I will be sure to post back. Thanks again.
Update: Today I received a private message from Karina from the Imusa company. She had read the review on the WhiteBlaze forum and has offered to send some products that could be of some help free of charge. This says a lot of the service at the company, in my opinion. This has turned out nice, a quality product, and a quality customer service. So, I will be sure to report back and write about how whatever is coming works out.