That's right rosewater isn't expensive. I used it for the chocolate cakes I made for my niece's birthday the past two times. Instead of vanilla I used rosewater, and I filled the cake with two layers of whipped cream which also had a couple of drops of rosewater added. Then just plain chocolate fudge icing.

First time I decorated it with candied violets - they are more on the expensive side but get you lots of ooohhhs and aaahhhs. I had wanted to get candied rose petals but they were out that time. The last time I decorated the cake with frosted berries.

I know in England you can get it at grocery stores like Sainsbury's, Tesco or Safeway, in the aisle where you find all the baking supplies.