what does one build for poppy jg?

Try lolking.com you can find well thought out and reasonably explained builds for pretty much any champ.

I would assume it is something along the lines of:

To start out with + +

then >

then i like to go for but you can fill that spot with just about any tanky item like or

or if you are ahead can be fun and do alot of dmg to squishies pretty balanced item for dmg and hp and armor pen never hurts

then it pretty much depends on the situation but stick to tanky items usually

My main poppy jg build is > > > > or > or or

A fun build when doing good early is > > > > > or > or

I dont think there is a right or wrong poppy build so experiment and find what suits your playstyle better and have fun