Hello and welcome! The OP hasn't been here in a long time and won't likely ever see this. They were inquiring for MP soap and infusions wouldn't bring anything to the soap as very little additional oils etc can be added and certainly not enough to give it any fragrance.I know it is a while since the OP. I am currently making an infused oil by filling a jar with the skin from quince I have made chutney from. I filled a jar with quince skin, poured in olive oil and will leave it for four weeks shaking daily and then strain. I am doing this as an aromatherapist to use the oil in my practice as opposed to soap making but you could do the same.