Hi Jim...my experience has been that those Lumberjack pellets are great product. They do produce a bit more ash than some other pellet brands, but I believe they burn more efficiently and produce a good smoke taste.
My understanding of pellet manufacturing is certainly not expert level...you might PM Todd (TJohnson)...he knows more about pellet manufacturing than anyone on the forums that I know of, and he can provide you with more insight than I can. However, it's my understanding that there are about 3 general levels of quality where cooking pellets are concerned:
- Lowest quality would be pellets that use oil as the flavor agent. These pellets are still all hardwood - a base of all oak or all alder, with flavored oils added to mimic the actual flavor wood. This means that hickory or apple flavored pellets, for example, don't actually contain any hickory or apple wood, but instead are infused with hickory or apple flavored oil.
- The next higher quality would be blended pellets. These pellets use oak or alder as a base wood with a percentage of actual flavor wood blended together. Typically, the ratio of base wood to flavor wood is around 66/33. So a blended hickory pellet, for example, would be about 2/3 oak wood and 1/3 hickory wood. I should add that I've burned more blended pellets than any other, with good results.
- IMHO, the highest quality pellets would be 100% flavor wood pellets...example: 100% hickory pellets are just that...no other wood is present, but instead the pellet is manufactured from whole trees that are 100% of the flavor wood indicated.
Just to muddy the waters a bit more, there are apparently some pellet makers that use scrap wood and sawdust from manufacturing in their pellets. This could be an issue for a couple of reasons...the most concerning of which could be if the scraps or sawdust came from, say, a furniture plant. Who's to say if the scrap is pure hardwood, or might have a certain amount of trash, glues, resins, etc. in it?
Keep in mind that these are only my opinions and experiences...others may disagree. Again, I'd suggest you ask Todd...he knows more about this than most. I don't want to try to push one brand over any other, but a few that I've used with good results:
CookinPellets 100% Hickory
Lumberjack 100% Hickory
BBQr's Delight Hickory and/or Apple (blended pellets)
B & B Pellets - Hickory, Apple or Mesquite (blended pellets...actually rebranded BBQr Delight, sold by Academy Outdoors)
Hope that helps some and doesn't just confuse. Here's a link to another thread on the subject of pellets that might be good reading for you:
http://www.smokingmeatforums.com/t/140632/affordable-cooking-pellets
Red