
Vanilla Extract - is optional & it is easy to make Vanilla Extract at home.
Cornflour - US name for this is Corn Starch (not flour made from corn).
Milk - in both the biscuits and the buttercream mixture, milk is added to thin down. Both should be stiff but not so much that they can't be piped with a little pressure.
Jam - raspberry jam/jelly/preserve is best, but you can use strawberry or even apricot. See my Plum Orange jam recipe for how to make your own, or try some lemon curd. Traditionally piped in the centre, you can add a layer if you prefer, provided not too runny.
***Please see the step-by-step photo tutorial before this Recipe Card for more details & information. Especially recommended for beginners.
Try some more British biscuits like my popular Traditional Scottish Shortbread, homemade Chocolate Digestives or Air fryer British Scones if having your own afternoon tea or tea party.