Category specific mutagens.

Mutagens and their recipies for mutation in specific categories, after the suggesion of @KA101. They are created using high level cooking (level 9) skill with mutagen, bleach and another indrigent, corresponding to the category.

* tainted veggy - plant mutations
* chitin or honey comb - insect mutations
* sewage sample - slime mutations
* tuna or sardine - fish mutations

They allow slightly more control of the mutations for the player. To balance things they are high level and cause only one mutation. It encourages the player hunting down specific monsters, which is always nice.

The problem is that there are no appropriate materials for the other recipies (bird, rat, beast, ...). All creatures uniformely drop meat or tainted meant, it is not possible to distinguish and perhaps would be a bit overkill just for this feature.