For larger quantity you can double or triple the recipe but be sure to add the milk gradually as it thickens up very quickly.
And ta-da! It is ready, yummy I love it so much couldn’t wait to eat with cake so I started ahead and started eating the frosting lol. I haven’t met anyone who loves chocolates as much as myself.
Excuse the mess, I had my almost 9 month old on one hand and I wasn’t fussed about frosting the cake, just wanted to splodge some frosting on the cake and gobble it down. All finished in 1 and a half day.