I have reversed my way of eating fat. I used to follow Bear's recommendations and ate my fat first, then the leaner portions of meat. This significantly helped with my digestion. Then I thought about reversing the order. I now eat the meat first, then the fat. Both methods give good clear stops as to how much I may need at any sitting. However, I really believe that eating meat first offers the best chance at having enough HCL to handle the meat. I also believe this is the way 'we' did it back when. First ate the flesh near the surface, and after, dug deep for the fat, marrow, brain....
Also I have found a very wonderful way of eating tough back fat. I slice into cubes, then put it into a food processor until just small pieces remain, not completely liquified, or turned into a paste. Then I put it into a wide based bowl and the bowl then gets floated in 115 F water. I do this while I eat my meat. Then, some minutes later, a lot of the liquid has separated from the chunky 'mush' and the rest is most palatable to either eat as is, or further separate the liquid portion from the solids with my mouth, and if desired, can spit out the fiberous remains. The liquid is like higher temp rendered fat, a beautiful golden yellow that is simply delicious. Enjoy