Abstract. Certain function spaces called amalgams have been used and studied in several recent papers on abstract harmonic analysis. In this paper, we give a new proof of a Hausdorff--Young theorem for amalgams on locally compact abelian groups. We also prove some complementary results about amalgams and their Fourier transforms, and in particular give simple proofs of some facts about the Fourier multipliers from certain spaces of functions with compact support into A (G).