[Perikles]

Originally Posted by irmamar

But why 'macerated'? Couldn't I use macerate, as a substantive. If I say pot marigold macerated, it seems that I'm going to use the plant, but I'm going to use the oil. I throw the plants away.

We say 'infusión' when water is used, not with oil.

You are correct, both the past participle and the noun mean that you are using the plant. What you use is the juice or essence from the macerating process. I also think you are right about 'infusion'.

So 'Pot marigold juice/essence in extra virgin olive oil'

Edit: 'Juice of macerated pot marigold in extra virgin olive oil'