how profitable are bubble tea (also called boba tea) shops?

[Courtney Duong]

Hi BP,

Anyone has any experience having bubble tea/boba tea shop as a tenant?  How profitable are those stores compare to restaurants and others businesses?  @Joel Owens always said rent to sale should be 1 to 10 for restaurants to be profitable, what should be the rent to sale ratio for these bubble tea shops?

Any input is greatly appreciated.