If you don’t have salad dressing, you can use yogurt or custard sauce instead

How to make custard sauce: 2 egg yolks, 200g milk, 30g sugar (you can add more if you like it sweet) Measure to 40g), 20g butter or corn oil, 15g cornstarch.

① Beat the egg yolks with sugar until white, ② Sift in the cornstarch and stir until there is no dry powder, ③ Pour in 1/4 of the boiled milk, stir quickly to form a paste, and then add all the milk. Pour back into the milk pan or non-stick pan. ④ Turn on the lowest heat and keep stirring until it is thick but fluid. Add butter or corn oil, remove from the heat (put ice water in the pot across the pot in summer), continue stirring until the oil splash is no longer visible, then turn off the heat and let it cool before use!

You can also use thick yogurt instead.