bō lòh làu sāa bāau
菠蘿 is pineapple, 流 is flowing, 沙 is sand (together 流沙 is flowing sand or quicksand), and 包 is bun, so 菠蘿流沙包 is pineapple quicksand bun.
A pineapple bun with a molten custard filling.
pineapple bun
pineapple bun w/ butter