TWEEDLEDUM

ENANTIOMERAwkwardly mention ear — it's one of a pair, the mirror image of the other CONTAGIOUSLike laughter, sometimes BEAUTYMARKEnhancing "blemish" (3x) BROOMSTICKWitch carrier (10) GARDENHOSEKid’s knocked over shed one rebuilt – a wind-up for the horticulturalist? (6,4) ISLEOFDOGSReportedly, I adore residents of Battersea, part of London EMANCIPATEEuropean chap worried about withdrawn photo's release DUSSELDORFEuropean city recovering from disappointment, investing not as much (10) KOOKABURRAThis bird sits in the old gum tree (10) SOMEPEOPLE"Unbelievable!" ... or what 17-, 25-, 35- and 46-Across are made from, letter-wise? ALASKAROLLSushi bite topped with salmon SETTOMUSICNoted work? FORTYWINKSShort nap (5,5) PYTHAGORASGrasp a hot problem about unknown philosopher