Hi Nodrog,
I've had good results using this base and method in the past.
The key point is not just following the base to spec, but following the main curry cooking method that follows the base recipe. Most curries on this site start with oil, then add garlic/ginger, tomato puree, etc followed by spice and then base. See just about any of the restaurant videos.
Taz's method starts with a ladle of base, and other ingredients from the start. This initial mixture is reduced to a paste by cooking out the liquid for several minutes, then additional base is added, meat, coriander, etc is added. The effect of reducing the initial ladle of base, presumably, is to prevent the spice from burning while developing their flavour as the base reduces to a paste.
This is why the Taz base has a higher oil content, there is no initial oil. Once the initial ladle of base is reduced, the recipe is pretty much the same as others on the site.
Just follow the final curry recipe that follows the base recipe. I recall its a Dopiaza, but you can easily substitute this for a Madras, etc.
Hope this helps.
-- Josh