Nice easy start to Monday from Armonie.

Across
1 Material found in the analysis of a brick (6)
FABRIC
[o]F A BRIC[k] (found in the analysis)
4 Thoughtful in purpose and deeply impressed (8)
ENGRAVED
Double definition
10 Relish being cool in a shanty (9)
SEASONING
IN (cool) in a SEA SONG (shanty)
11 Endlessly commonplace operatic heroine (5)
NORMA
NORMA[l] (commonplace, endlessly)
12 Left individual isolated (4)
LONE
L (left) + ONE (individual)
13 Male stand-in in audition for play (3,7)
THE TEMPEST
HE (male) + TEMP (stand-in) in TEST (audition)
15 Worker is less industrious after final warning (7)
GLAZIER
LAZIER (less industrious) after [warnin]G (final)
16 Old Bob is related to winger (6)
SISKIN
S (old bob) + IS + KIN (related to)
19 Good place for husband in a bad place (6)
CHAPEL
H (husband) in (PLACE)* (*bad)
21 Society keener to get cleaner (7)
SWEEPER
S (society) + WEEPER (keener)
23 Soprano rejected term of ownership (10)
POSSESSION
(SOP)< (<rejected) + SESSION (term)
25 Parking by the verge is proper (4)
PRIM
P (parking) by the RIM (verge)
27 Relatives acceptable to be introduced to social workers (5)
AUNTS
U (acceptable) to be introduced to ANTS (social workers)
28 Drug tea? It excited a feeling of appreciation (9)
GRATITUDE
(DRUG TEA IT)* (*excited)
29 Security device makes mum more embarrassed (8)
SHREDDER
SH (mum) + REDDER (more embarrassed)
30 Pipe conservation group makes smooth (6)
FLUENT
FLU (pipe) + NT (conservation group, National Trust)
Down
1 Developed glue safe in part of aircraft (8)
FUSELAGE
(GLUE SAFE)* (*developed)
2 Make one believe clothing’s to be laundered (9)
BRAINWASH
Cryptic definition
3 Press club (4)
IRON
Double definition
5 Repudiates Tyneside tycoon (7)
NEGATES
NE (Tyneside) + Gates (tycoon)
6 Call Mark over plant for showman (10)
RINGMASTER
RING (call) + M (Mark) + ASTER (plant)
7 Volume of Gaelic poetry (5)
VERSE
V (volume) of ERSE (Gaelic)
8 Shortage of downland? (6)
DEARTH
D (down) + EARTH (land)
9 Spot woman’s instrument (6)
ZITHER
ZIT (spot) + HER (woman’s)
14 Furious at having the sick around the place (10)
DISPLEASED
DISEASED (the sick) around PL (place)
17 Ship in a French badger (9)
IMPORTUNE
IMPORT (ship in) + UNE (a, French)
18 Bared tum? Could be for a tattoo! (8)
DRUMBEAT
(BARED TUM)* (*could be)
20 Food in sink in the alley (7)
LASAGNE
SAG (sink) in LANE (alley)
21 Work hard on a new motto (6)
SLOGAN
SLOG (work hard) on A N (new)
22 Quarrels about recipe for fish (6)
SPRATS
SPATS (quarrels) about R (recipe)
24 Boy gets a rare echo device (5)
SONAR
SON (boy) gets A + R (rare)
26 Penny’s sick? Take this! (4)
PILL
P (penny) + ILL (sick)
*anagram
For 4a I had GRAVE (thoughtful) inside END (purpose).
Parsed 4a as passerby. Also had 2d as BRA IN WASH. The pipe in 30a should be FLUE.
I had 4a and 2d the same as passerby and Hovis @1&2. I didn’t get the parsing of SEASONING though, as I couldn’t see beyond shanty (town) and completely overlooked (sea) shanty.
Thanks to Armonie and Teacow.
As easy as Vulcan’s over there. 3d( my FOI) should surely go for retirement.
4a & 2d agreed. (Who’d be a blogger? They’re all so easy in retrospect).
But I did like DEARTH, trying to think of some alternative world in which ‘D’ = ‘Down’ and, when the penny dropped, feeling like CrossWorld’s daftest geek.
Thanks Armonie and Teacow
Actually found this a little more challenging than usual from this setter. Didn’t see the hidden answer at 1a (justified it more as a brick being a part of the fabric of a house, but there you go … just a clever hidden !). Also couldn’t parse POSSESSION after not knowing the SOP abbreviation for ‘soprano’. Did have the parsing of 2d and 4a as the consensus of posters though.
Thought that the clue for SEASONING was very good with BRAINWASH not all that far behind.
Finished in the SW corner and with LASAGNE and CHAPEL as my last, maybe I was just having a slow day at the solve !!
Dd