Smoked Beef Tenderloin - 1st run with A-MAZE-N Expandable Tube Smoker

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worktogthr

Master of the Pit
Original poster
OTBS Member
SMF Premier Member
Nov 3, 2013
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Massapequa, NY (Long Island)
So for Christmas my wife bought me the expandable tube from A-MAZE-N but having lots of grill/smoker options I haven't gotten around to trying it out.  I had high expectations because I have two AMNPS trays and I love them.  I had defrosted a beef tenderloin that I was going to cook for the Super Bowl but I had a much smaller turn out than I expected and decided not to cook it.  So here is the process followed by some photos.

1.  Preheated my Weber Genesis 310 to the lowest temperature I could (which ended up being about 215-220).  Far left burner was set to the lowest setting and other two were off.  Once it got to about 215, it stopped climbing.  

2.  Zapped some hickory pellets (estimated 2-3 hour cooking time so I used the amount of pellets called for in the tube instructions)

3.  Lit the tube according to the directions (it was a bit windy so the flame was getting massive or blowing out completely.  Conditions fault, not the tube so it took a bit of babysitting but no big deal)

4.  Blew gentle, long breaths into the tube every 2 minutes or so to really get the "coals"  going.  Always worked with the tray so I figured I'd try it with the tube.  Todd mentions in the manual that this might help.

5.  After about ten minutes, I blew the flame out, put the rack onto my Weber and placed the tube in the place where the smoke seemed to blow smoke right in the path of where the beef would be places.

6.  Shut the lid of the grill and watched and smelled sweet blue hickory smoke.  Impressive as always.

7.  Placed the Beef tenderloin that I rubbed with Good Times BBQ Beef Rub up on the rack, probed it with my maverick set to 120.

8.  Pulled the tenderloin at 120 and let it rest for about 10 minutes while I cranked two burners onto high to sear it.

9.  Seared the tenderloin for about a minute a side until the IT was 125.

Sliced it up and served myself two nice big hunks, one with St. Augur creamy blue cheese which is my favorite steak topping lately and the other with some horseradish sauce.

Some final thoughts before the pictures:

Again, I am absolutely impressed by A-MAZE-N products.  The tube puts out the same sweet smoke as my trays do and I am so excited that I can take a tube full of pellets to any friend's or family member's house who only has a gasser and smoke ribs, butts, beef, etc.  The finished product had a nice smokey flavor but was by no means overly smokey.  Smoking on my gasser like this is also a great way to use up some of the many propane tanks I have in my yard that just have a little bit of gas left in them.  As far as the tenderloin is concerned, flavor wise it was right on, really interesting flavors in the rub (savory but a slight, pleasant sweetness).   However I haven't cooked beef at such a low temperature in a while so I forgot how the texture can be different.  For me, it was a little too raw in texture.  I should have thought about Bear's gloriously pink wall to wall beef roasts pulled at a much higher final IT.    I am so used to cooking beef roasts and steaks in the 275-310 range on my pit barrel or on my kettles  that I forget that there is a bit more carryover causing the final product to be more medium rare than rare like this one was.  With hotter temps, pulling at 120, it probably carries over  to 125, then I sear it and its probably in the 130s.  I also think the end that I didn't eat (the last picture) had a higher IT and was probably more in my ballpark of what I like.  Next time I would turn the roast about half way through as that side being closer to the lit burner is probably what caused it to cook more.   No big deal, still made a great meal and the leftovers can now be grilled to reheat or seared in a cast iron pan and they will end up perfect for my liking.   Well thanks for looking and highly recommend the expandable tube and as always, Todd being the great business man he is, threw in a nice size bag of the Pitmasters blend which is my favorite for smoking cheese.  

-Chris





















 
That looks perfectly done to me Chris!

But we do like a little mooo, with our beef!

Did you do any trimming on the roast, or is it just tied up right out of the cryovac?

Point!

Al
 
That looks perfectly done to me Chris!

But we do like a little mooo, with our beef!

Did you do any trimming on the roast, or is it just tied up right out of the cryovac?

Point!

Al

Thanks Al for the point! It was definitely good but texturally I like it a little more done. I trimmed off the silverskin and d tied it before vacuum packing. Figuring it was so lean I left what fat there was on there.
 
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Beautiful looking tenderloin, I have been toying with getting a tube as well as the tray, A lot of places do not ship to Canada, I did manage to find a couple places that carry them, With the rate difference in our money and shipping they are all around twice the price. But I think it will be a good investment anyway. Point. Love the look of it. Great job.
 
Beautiful looking tenderloin, I have been toying with getting a tube as well as the tray, A lot of places do not ship to Canada, I did manage to find a couple places that carry them, With the rate difference in our money and shipping they are all around twice the price. But I think it will be a good investment anyway. Point. Love the look of it. Great job.

See PM I just sent. Cdn dollars too.
 
 
Beautiful looking tenderloin, I have been toying with getting a tube as well as the tray, A lot of places do not ship to Canada, I did manage to find a couple places that carry them, With the rate difference in our money and shipping they are all around twice the price. But I think it will be a good investment anyway. Point. Love the look of it. Great job.
Thanks so much!  That is too bad that they are so expensive but they are definitely worth it!  They are all great products!
 
That meat looks great.  Question for you about the tube.  It appeared to be in the un-expanded size in your pictures.  Did you fill it full, light, then lay it on its side once it was going well?  How long did the burn last?  The reason I ask is that I just used mine for the first time last weekend and I filled the un-expanded tube full with Pitmaster's Blend, once it was going I laid in on its side in the fire box of my smoker.  I was cold smoking some bacon.  It only lasted about 3 hours.  I thought it would last longer than that.  The smoke was heavier than I had expected it to be also.  The next day I cold smoked another piece of bacon and only filled it half way full when laying on its side.  It also lasted about 3 hours, but seemed to have a little lighter smoke.

Just curious on your experience.

thanks.
Nate.
 
Chris the tenderloin looks great,I like mine cooked just a little more.I also love blue cheese on beef.Points

Richie
 
 
That meat looks great.  Question for you about the tube.  It appeared to be in the un-expanded size in your pictures.  Did you fill it full, light, then lay it on its side once it was going well?  How long did the burn last?  The reason I ask is that I just used mine for the first time last weekend and I filled the un-expanded tube full with Pitmaster's Blend, once it was going I laid in on its side in the fire box of my smoker.  I was cold smoking some bacon.  It only lasted about 3 hours.  I thought it would last longer than that.  The smoke was heavier than I had expected it to be also.  The next day I cold smoked another piece of bacon and only filled it half way full when laying on its side.  It also lasted about 3 hours, but seemed to have a little lighter smoke.

Just curious on your experience.

thanks.
Nate.
Thanks so much.  As far as how I lit it, you are correct it was in the 12 inch (unexpanded) position.  But I only filled it to the line where the two parts meet and lit it from the closed side.  It lasted about two and half hours that way.  As far as my lighting procedure, I started it with the torch for about a minute, then let the flame burn and about every 2 minutes during that time, I blew long but gentle breaths into it to get the cherry, if you will, burning bright.  Now the reasons for different length of smoke out put can be a bunch of things.  Maybe your firebox has more oxygen in it than my closed grill which caused them to burn more quickly, maybe your pellets were dried than mine.  Maybe you altitude is different.  So many factors.  If you are not getting the expected burn times or inconsistant results, you should contact @TJohnson  and he will help you threw it.  It is his product and his customer service is first rate!
 
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Chris the tenderloin looks great,I like mine cooked just a little more.I also love blue cheese on beef.Points

Richie
Thanks so much Richie!  I like it a little more done too.  Especially when cooking low and slow, I am going to bring it up to at least 130 from now on.
 
Great looking meal Chris. I do love tenderloin, but up here you have to take out a mortgage to buy one.

Have to agree with you on the texture of beef that rare. We prefer it cooked to medium.

POINT

Gary

Thanks Gary! Appreciate the point. Next time I will definitely cook it a little longer. This one was 5.99 per pound which was a steal even if it was ungraded. Think it was probably more in the select ball park but it was plenty tender.
 
WT, Awesome looking smoke,I too received a tube for X-mas but haven't used it yet.Your post is making me wish for spring to try it out ! 
 
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