This was actually from 五角场 shop, but it's not available on Google

This is their signature cake, and truly for good reason. It's mindblowingly good, esp if you shove the entire thing in your mouth and let the flavours explode. There's great umami from the seaweed and pork floss which makes me think of dried scallops, which is boosted to the Nth degree by the mayo. Then you have the mild sweetness of the cake coming through

It's really no surprise why baoshifu is everywhere nowadays, the only real problem is finding a real shop since I've heard fake ones are abound