Peppermint Creams
Ingredients:

White from one large egg or two small eggs 
8 oz icing sugar (one cup of frosting if you live in the US)
Peppermint essence or peppermint oil
Method:
Beat the egg white in a bowl with a fork and sieve (sift) in 6 oz of
icing sugar (frosting). Mix well with a wooden spoon and slowly sieve in
more icing sugar, half a tablespoon at a time until you have made a
stiff paste. Shake a little icing sugar on the work surface and empty
the paste onto this. Add 3/4 drops of peppermint essence or oil and
gently knead it together with your fingers until you have a smooth
paste. Have a taste of a small piece and if the flavor is not strong
enough, add a few more drops of the peppermint.
Rub icing sugar on
a rolling pin and roll the paste to quarter of an inch (0.5cm) thick.
Cut out individual peppermint creams with a cutter - a round one or any
other shape you have handy. Cover a plate with non-stick parchment or
greaseproof paper (vegetable parchment) and place the peppermint shapes
on the paper. Cover with a clean tea towel and leave overnight in a cool
place (but not the fridge). Store in small paper cases in an airtight
tin.