Meringue Frosting for Raspberry White Cake

Hello, could I substitute the corn syrup with something else like honey or sugar as where I live (Italy) this product isn't so available? Thanks in advance!

Oops - apologies, I meant to leave this comment on the rainbow cake recipe page - this recipe was the one I browsed to when seeking more information about why the rainbow buttercream meringue wasn't working.

I agree with the others re: this buttercream meringue. If my frosting turns out it will be a minor miracle - I've been beating it for more than 10 minutes. More detailed instructions on this tricky process would be very helpful - if not essential. Warnings, like "be sure not to... " and "bring the egg/sugar mixture on the stove to ___ degrees could be added. Other recipes give a temperature reading - I'm not sure if I under or over-cooked the meringue. Pretty cake though!