What is the best ERP for restaurant management?
MS Dynamics GP as a restaurant module. You could also try Cenium (http://www.cenium.com/restaurant.html) though I haven't used them myself.
There are a few nice packages for restaurant management ERP. OrchestratedFOOD for example, offers complete ERP for small to medium-sized restaurant chains. Restaurant365 is also a good one whose functional areas include marketing, catering, operations, accounting, franchising, and integration with POS.
There are many software that you can use for your restaurant. However, I found a good company that give you a full complete package with really good customer service. It's QSRonline (go.qsronline.com). They do online reporting, scheduling, accounting, food costing.