Across
1
Baked good might make you portly? As if! (4,6)
6
'70s sitcom, fluffy fare? (4)
9
'Republican monarchy': hard to penetrate crazy vestiges of Empire (5,5)
10
Withdrawing exasperated utterance, seeing celeb (4)
12
Place for experiments; artist with sketch being cross (11)
15
Musician, chaste? Around about 50/50 (7)
16
Piece of work announced: instructions for gardener, seamstress? (2-3-2)
17
Slice of apricot tart and cheese (7)
19
Vegetate on vacation touring Chile resort in caravan, perhaps (7)
20
Waving hello, maniac creates despair (11)
23
Number of regressive Leninists (4)
24
Playing in flames is penultimate set of games (4-6)
25
A canal God recalled (4)
26
Notes describing sheep liver, perhaps, somewhere in US (3,7)
Down
1
Some of Armenia is agricultural land (4)
2
Shiny fabric? Implausible (4)
3
Biplane agent repaired (mechanical reparation) (5,7)
4
Dish, German, in Baden-Baden ... maybe throw up (4,3)
5
Tries once more removing Bottom from what actors do with play (7)
7
After seeing, perhaps Golf: Introduction to Driving Everyman would play (... he's never had a lesson) (10)
8
In training, rower hopes to achieve measure of potency (10)
11
'La ti re so'? Hang about: this gives me energy! (5,7)
13
A standard time before workers finally built employers' homes (10)
14
Aggression displayed by curt, uppity, oddly ugly eunuch with energy (10)
18
Let hate wildly make you a competitor (7)
19
Cunning and very posh, the French will conceal banking info (7)
21
Duchamp's art, denying aesthetics primarily? (4)
22
American edition (second-hand) (4)