Guru 3, also works with:
4 Goat m.
1 special pepper
2 vinegar
4 dressing

I'm trying some other meats

edit: failed with wolf meat, raccoon, weasel, gazelle and fox 4x

fox meat, raccoon, weasel, gazelle, fail even with 7x

I'm G15 and I've tried the 4 meat recipe shown above by the G41 and G3 dudes, it's not 100%. I've failed quite a bit and I've tried wolf, rhino, goat and fox. I'm really starting to question the validity of people claiming 100% success rate with ridiculously low meat counts. I've tried this both with 1.4k cooking mastery (manos) and silver embroidered.

Also failed for me ( Master 8 ) with Deer meat (1 high-quality pepper, 2 vinegar, 4 dressing):
- Deer meat x4: Failed (11 successes out of 20)
- Deer meat x5: Failed (15 successes out of 20)
- Deer meat x6: Failed (17 successes out of 20)
- Deer meat x7: Failed (18 successes out of 20)

Only Deer meat x8 (the normal recipe) works at my level.