Cornflour sponge cake

I have my Grandma's old recipe for 'Sand Cake', which might be a similar thing - I seem to remember its crust possibly being crunchy.

6 oz marg
6 oz sugar
3 eggs
Half teasp vanilla essence
4 oz cornflour
4 oz plain flour 1 teasp baking powder
2 to 3 tablespoons milk (thing these were larger than a modern tablespoon)

Creaming method.
Gas reg. 3.5 for between 1 hour and 1 hour 30 mins.

Thank you Esmay, that’s very welcome.

I ggled cornflour sponge cake and found this:
honestcooking.com/cornflour-sponge-cake/

l've made this cake for over 65 years from a recipe from my Grandma's 1934 cookery book .

If you make a classic sponge cake -
4 eggs
8 ozs soft butter
8 ozs castor sugar
I teaspoonful baking powder
I teaspoonful vanilla essence
8 ozs flour -
And replace 2ozs of the flour with cornflour - you'll get a very nice balance -not too dry , but different .

I used to add Camp
Coffee and decorate it with walnuts for a change .