I usually take 1 spoon of sugar.
HOWEVER, When I went to the dentist (manage to mess my teeth up somehow) he gave me a *******ing and told me to stop eating junk food and stop putting sugar in tea as well as apparently it's like a sugar filled mouthwash which does make sense now.
You get used to it tbh.
I remember starting off with nearly 2.5-3 spoons of sugar>2>1.5>1>0.5>0 (Worth noting: I ALWAYS have at least like 3 biscuits hehe)