My wife made feijoa chutney, which was amazing! Let me know if you want the recipe. She probably just got it off the internet though. We've made jam too, and some people love it but I find it a bit crunchy with the seeds. I'm trying to make feijoa jelly this week to get around that!
Also I just infused some feijoas into vodka to make liqueur. My family overseas make liqueur from berries and keep it for years, even decades!
I have a bag of feijoas on my kitchen counter and should get to starting a batch of feijoa wine this weekend. I've never done feijoas before - plums, pears, nectarines (and of course grapes), yes, but not feijoas. But it should be pretty straightforward...
In a bowl place - 500 gm peeled chopped feijoas
1 tbsp sugar
zest of 1 lemon
In another bowl cream - 180 gm butter
1 cup white sugar
Add to creamed mix - 1 egg
1/2 tsp vanilla
juice of 1 lemon
Mix well and add - 250 gm flour
1 tsp baking powder
Spread most of dough in greased/lined tin or flan dish, drain feijoas and spread on top of dough. Drop bits of remaining dough on top of feijoa, sprinkle with brown sugar. 180 degrees about 50-60 minutes.
This is absolutely divine, and make sure you drink the drained feijoa juice, its like nectar!!