Typical Belgian Witbier will be Malted Barley and Wheat as well as Coriander and Orange.
152F Mash for 1 hour
Saaz hops full 60 mins. WitBier's require Nobel hops IBU 10-17
Last 5 mins of boil add --
unground coriander seeds that you grind yourself Typically 0.5 ounces to 1 ounce is the right amount for a 5 gallon batch
Also add Bitter orange peel. can be purchased from a homebrew shop or zest from fresh oranges can be good too. For dried add 0.5 ounces per 5 gallons and for fresh zest 0.25 to 0.5 ounces.
Ferment with T-58 dry yeast per package directions and usually Witbier is bottle conditioned.