this recipe is very close but no matter what one does it will always taste like fucking shit. I would be embarrassed to let anyone know that you made that. OK the high is not bad but when smoked all expectation of the dope is trashed after you taste it. Unless this is posted by a law official and they want you to fail. anyways my dog has done this method and 2 other methods a total of 20 times and by far this is the better of the 3. I know someone out there knows the little twist to make it taste good. My dog would push and pull (water pull) maybe that's where he went wrong so many times.
Obviously, d-meth tastes like d-meth when it is smoked... the difference in taste that you are referring to is simply the taste of the impurities remaining in the dope from the TEK used.
Following this TEK PERFECTLY can Honestly produce a product with nearly a 90% purity (product has been produced and tested by extremely capable cooks with means to actually test purity). Even so, 10% impurity, or more in most cases, is FAR MORE than enough to alter the taste.
So, can the product, with use of this TEK, be produced pure enough to avoid the undesired taste of the impurities?... Sure.
One great start is to extract the PSE rather than gup chucking... But one of the significant advantages to this TEK is NOT having to extract the PSE (which is extremely difficult to do without significant losses these days)... And if you are putting the time and effort into extracting PSE, you might as well do it in larger quantities and use an alternate TEK to reduce the PSE...
A decent alternative to actually EXTRACTING the PSE, not stated in the original post, is to simply wash the pills with fuel (soak the crushed pill mass in dry non-polar for a few hours, and then filter it off and let it dry before use). Without getting too detailed, you SHOULD be transferring almost NO water with your fuel/meff solution when your cook is completed...So you need not be overly concerned about the impurities that are water soluble (most of them will remain with the solids in the RV)... The majority of the non-polar soluble impurities WILL BE transferred with your fuel/meff solution after the completion of the cook if you do not remove them with the fuel was detailed above.
Next, a much more in-depth post RXN work-up will significantly increase purity... (especially including a very good brine wash of the fuel).
Finally, if one was inclined to do so for such a small yield, proper recrystallization will even further increase purity... This TEK has produced a product with greater than a 99% purity when tested with lab grade precursors, a thorough post RXN work-up, and multiple recrystallizations... With that said, the typical yield of about 1.5g was reduced to about .7g due to the removal of the impurities and the associated mechanical losses...
So, all in all, I would argue that the time and losses are not worth the increase in purity with the small yields using this TEK... I would recommend fuel washing your pill mass, performing a good post RXN work up, and perfecting your technique with this TEK... If you do this, you CAN potentially achieve a purity in the mid 90%'s... This will greatly reduce the taste of the impurities in the final product...
If you are still unsatisfied with the taste at that point, I would recommend an alternate TEK or an alternate ROA.