Bijay@Sugar Daddy Bakes

I am a Baker and Cake Decorator in India. India has a huge Vegetarian Population that does not even eat eggs/gelatin. So I am constantly looking at finding vegetarian options. Issue at Hand: Regular Butter Cream - American Butter Cream ( Icing Sugar 10X + Butter + Milk/Lemon Juice / Cream) is an option ..and a lot of decorators use this as it sets hard, and they also add shortening into it ..and I am like , Nope I can't eat that , much less serve it. Its too Sweet /Gritty and Crusts and just tasteless. It has also made sure that people in my country to completely throw out any butter cream cake . You say Butter Cream and they say - too Sweet/gritty. I have been successful in the last two years to break that impression by making European Meringue based butter cream - I love Swiss Meringue Butter Cream . It is smooth, just sweet enough , takes colour well, pipes well , and is mostly temperature stable. But I can't serve it to people who don't eat eggs. I have so far been making a substitute - Ermine/Rue/Cooked Butter Cream - a Flour + Milk+ Sugar custard (AKA Pastry Cream minus the eggs) and whipping butter into it. It tastes good - people like it ..nut its a misery to work with - will not hold shape , will not colour well , and most of all weeps and weeps some more when we chill the cakes. So I am looking for suggestions on finding a starch that will not weep when frozen in a custard? And my second approach is to move to Aqua Faba to build the meringue and make SMBC. The starch custard option is easy and economical and does not leave me with mountains of Chickpeas . would love to hear thoughts . Thanks

India is mostly vegetarian and I am trying to make a stable , non gritty butter cream for cakes ...and I am currently using All Purpose Flour , Sugar and Milk in a custard and once done , I whip in butter ...I am struggling as it weeps ...so you are suggesting , I can cook the custard for longer and avoid this ? How long ? Does it not burn ?