Squish, squish, stomp, stomp... That's how you make nectar (why can't they just call it what it really is - wine?!) in the world of The Sims.
In my case, squish, squish, stomp, stomp, crash! - that's how I do it because my balance isn't all that good... Although, in my defence, I must say that the vapours forming beneath my feet must have had something to do with it, you know?