Served in a pot with cookies at the side, it is good for 4 refills in the tea cup provided. However the taste does get more diluted with each refill as the ice melts.
For me, SGD 11++ for an iced tea, albeit a insta-worthy one served with real lychees is a tad pricey. But if you visit them on weekdays during 11am to 1.30pm, you could enjoy this (or other specialty teas and coffees, exclusions apply) with a main course for only SGD 16-26++. I had the Asian marinated fried chicken (tastes really yummy) with waffles and iced lychee tea for only SGD 18++. A very filling and satisfying lunch!