Talk to the fruit seller. Pour him a normal swill by colleting the tankard and filling it from the swill tap.
King Peach, phuh. He would like some hormone swill.
Who other uses hormones?
Well, Lotti is using them for his (her?) gender things.
Middle Rufus Lotti's lunchbox can be found inside the locker door in the tank. Look at the lunch box. Give the hormones to Left Rufus.
Mix the hormoes with a tankard full of swill. Serve it to King Peach. You got two zlottis tip on your tab!