Where can i find mint chocolate chips?

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Have a lovely new cupcake book and one of the nicest looking ones needs mint chocolate chips. Can only find them on American sites. Does anyone know where I might find them in the UK or what I could substitute?

suppose you could grate a minty chocolate bar yum

You can make your own if they do not need to be perfect round buttons. I make them by melting choc and adding peppermint from the home baking isle in the supermarket. Just a drop though!

Green and Blacks Organic dark chocolate - mint 100G

Chop with big knife. Try not to eat 3/4 of it.