Across
Subject described by improper noun, an option to consume? (2,3,4)
I haven't cracked this one yet — but Fifteensquared have:
THEME=”Subject”, inside/”described by” anagram/”improper” of (noun)*
As aging rocker, grossly hirsute originally, I’m tearing my hair out! (5)
I haven't cracked this one yet — but Fifteensquared have:
first/original letters of A-[s] A-[ging] R-[ocker] G-[rossly] H-[irsute]
Brace having held one log that’s loose, shelter built in the woods (7)
I haven't cracked this one yet — but Fifteensquared have:
definition: a makeshift shelter made of tree branches TWO=”Brace” around both of: I=”one” and anagram/”that’s loose” of (log)*
Wrong content in parcels, send a batch back (7)
I haven't cracked this one yet — but Fifteensquared have:
reversed/”back” and hidden “in” [parcel]-S SEND A B-[atch]
With that, odd number is even for the present time (4)
I haven't cracked this one yet — but Fifteensquared have:
for the definition: “present” as in a Christmas present/gift “With that”=With NOEL=with ‘no EL’ with no EL, the “odd number” EL EVEN becomes “ even “
First of fruit dark, like a kiwi, say? (10)
I haven't cracked this one yet — but Fifteensquared have:
definition refers to the flightless kiwi bird first letter of F-[ruit], plus LIGHTLESS=”dark”
See 15 Down
A bluebottle stuck in prune drink (7)
I haven't cracked this one yet — but Fifteensquared have:
A (from surface); plus COP=”bluebottle” meaning ‘policeman’ inside LOP=cut=”prune”
Someone choosing anagram of ‘Chile’ in flier? (10)
Floor was whiffy when rear wiped (4)
I haven't cracked this one yet — but Fifteensquared have:
definition: “Floor” as a verb can mean to ‘stun’ (in the sense of ‘perplex’, or in the sense of ‘knock out’) STUN-[k]=”was whiffy” with the rear letter removed
Song and dance don’t stop? (5-2)
I haven't cracked this one yet — but Fifteensquared have:
definition: a fuss ‘carry on’ as two words can mean “don’t stop”
On the podium if not after flipping, gymnastic star gets medal, finally (7)
I haven't cracked this one yet — but Fifteensquared have:
for the definition, a rostrum can be a podium, so ‘rostral’ can describe something with a connection to a podium OR=”if not” reversed/”after flipping”; plus anagram/”gymnastic” of (star)*, plus final letter of [meda]-L
Scrap approach (3-2)
Westernmost city in Florida Panhandle, no place as far out (9)
I haven't cracked this one yet — but Fifteensquared have:
anagram/”far out” of (no place as)*
Down
Corrupt in double time, seemingly? (6,2,3,4)
I haven't cracked this one yet — but Fifteensquared have:
“double time” suggests double T (for time), giving TT TT is the ‘core’ or central letters of ro-TT-en
Grating fifth of cheese, sharp object (8)
I haven't cracked this one yet — but Fifteensquared have:
S is the “fifth [letter] of chee s e” + TRIDENT=”sharp object”
Butcher, a geezer (5)
I haven't cracked this one yet — but Fifteensquared have:
FELL=to cut down=”Butcher”, plus A (from surface)
Ground slippery, suddenly sprang back (8)
Sweet cuddle when knelt before Spooner? (6)
I haven't cracked this one yet — but Fifteensquared have:
Spoonerism of ‘bum hug’=”cuddle when knelt”
Standard enclosures second (9)
Reportedly more than one cheese in piece of cake? (6)
I haven't cracked this one yet — but Fifteensquared have:
definition: a BREEZE or a “piece of cake” is something easy to do sounds like (“Reportedly”): ‘Bries’=”more than one cheese”
Rock nihilists’ spat, a nadir for group in film (4,2,6,3)
I haven't cracked this one yet — but Fifteensquared have:
definition: a film about a rock group [wiki] anagram/”Rock” of (nihilists spat a)*, plus the last letter/nadir of [grou]-P
16a
Purpose of megaphone, dammit! (3,6,3,4)
Anomalous, a bug fed endless fruit (8)
See 23
Discontented alligator prodding cat in some box? (6)
I haven't cracked this one yet — but Fifteensquared have:
definition: the larynx is also known as the ‘voice box’ A-[lligato]-R “Discontented” (with its contents removed); inside LYNX=”cat”
Models, just over three turned up (3-3)
18d
Fitter lad crushed by big old player? (5,8)
Type letters or click words in the clue