The sandwich, if I remember correctly, was actually something knocked together by one of the Earls of Sandwich for himself and some guests he had visiting, which is where the name came from! The Earl of Sandwich here is a pretty cool guy hahaa.
I really do love Chie and Ai, but with Ai still obviously in denial of their relationship, I hope that the two can have a somewhat serious chat in the future about where things are going etc. Plus I really wanted to see a kiss this chapter! Damnnn. They are still super cute tho