noun
separate handling; separate arrangement
Used for treating items, payments, or accounts individually rather than together. Common in billing, accounting, and administrative contexts.
請求書は商品ごとに別立てにしてください。
Please make the invoice separate for each product.
この費用は別立てで計上する必要がある。
This expense needs to be recorded separately.
noun
beating separately (egg whites and yolks)
Only when written 別立て
Cooking term: beating egg whites and yolks in separate bowls before combining. Restricted to the 別立て spelling.
スポンジケーキを作るときは卵を別立てにする。
When making sponge cake, beat the eggs separately.
別々 is a general adjective/adverb meaning 'separate' or 'individually', while 別立て is a noun referring to the act or system of handling things separately, often in formal or procedural contexts.
Compound of 別 (separate) + 立て (arrangement, method). The cooking sense is a specialized extension of the idea of handling components separately.