Complex sentence: With the egg white, it is sometimes called a Boston Sour.In some places where people do not like or cannot have egg white due to religious concerns pineapple juice is used as a substitute.
Split into simpler sentences: With the egg white, it is sometimes called a Boston Sour. For those do not like or cannot have egg white (e.g., due to religious concerns), pineapple juice is used as a substitute.