Which brand of coffee does HK ICAC use to drink ga?

In fact, the story of ICAC coffee stemmed from the 1970s when ICAC was set up. At the time, most of the investigators were British people. Naturally, they will ask interviewees whether they wanted tea or coffee according to Western culture. As time went by, most people associted guilty people with coffee. Actually, you can ask for tea, coffee, water....
now with ICAC provided they have. The coffee is just normal coffee, not something magical. It wont turns a non-guilty people guilty.

ICAC officer