Make
up one batch of marshmallows as usual.
Scoop
approximately half of the mix into the dish you want to set them in, and
smooth out the top.
To
the rest of the mix still in the bowl, add 1/4 teaspoon mint flavouring
and a few drops of green colouring.
Whisk
until well incorporated. Taste the mix to see if it needs more
flavouring, and add more colouring if you wish, until you get the
desired tone. Remember that the end result will have a coating of
starch, so make the colour somewhat stronger than you actually want. (As
you'll see in the photos, my green was a little too subtle.)
Scoop
the mint marshmallow on top of the vanilla, smooth out, and leave to set
as usual.
Once
the slab is set and you've cut it into pieces and dusted them with
starch, it's time to add some chocolate (not strictly necessary, I
suppose, but it does go really well with the mint).
I
put 1 cup of vegan dark chocolate drops in a metal bowl and sat it over
a pot of water on the stove. Melt the chocolate slowly, and take it off
the heat while there are still a few unmelted pieces in there (even once
it's off the stove, it'll keep heating from the hot water in the pan).
You
can put as much or as little chocolate on your marshies as you like.
Personally, I think coating the whole thing in chocolate is too much. I
like painting the base with a thin layer of chocolate, setting it
choc-side-down on baking paper and then dripping or flicking chocolate
(just off a dessert spoon works fine) across the top.
Pop
them into the fridge to set the chocolate.