Ingredients
2 slices of bread 
5g butter 
1 tsp mayonnaise 
½ tsp creamed horseradish 
2 - 4 slices of beef 
A handful of rocket 

Method
Butter your bread and spread the mayonnaise on one slice of your bread and the horseradish on the other side. 

Put the rocket on top of the mayonnaise and the beef on top of the horseradish. 

Put the beef side on top of the rocket side and cut in halves or quarters.