added "with"

ps-grammar/restaurant/order.jsgf

@@ -7,4 +7,4 @@ public <restaurant> = [tobi] [bring me] [one | a ] <objects> [please];
 
 <drinks> = coke | redbull | icetea | (meadow milk) | (coffee pads) | beer | (fresh milk);
 <food> = lemon | mandarine | apple | pringles | bubblemint | (cranberry cereals) | (muesli cereals) | (chocolate cereals) | peanut | mints | oblates | chocosticks | bubblegum | noodles;
-<combo> = <food> and <food>;
+<combo> = <food> (and | with) <food>;