Hippo synthesis the gender

If all female ingredient then synthesis hippo what is the outcome gender?

If you have two scrolls

And synthesize both at the same time.

You are 90% guaranteed to have a male and female.

But be aware, nothing is 100%.

Can't promise you will get opposite gender,

But many people have proven that you make two mobs consecutively, you are highly likely to get opposite gender

It will be male.