Left-side hand radical, three-stroke contracted form of
手. The indexing radical, marking
拌 as a hand-action verb. The hand is doing the mixing:
拌 is to stir, toss, mingle — the cook's hand in cold dishes like
凉拌 (cold-tossed salads). Same family of hand-manipulation verbs:
搅 to stir,
揉 to knead,
抓 to grab,
捏 to pinch.