In the blog, the definition in the clue is underlined and followed by the answer; the parsing; any comments
ACROSS
1 Whippy osier in creek for some focus of interest (6)
WICKER; WICK-(int)ER(est); creek for some=WICK; focus=centre; is there such a thing as a rigid osier?
6 Edition by school ma’am left out (6)
MISSED: MISS-ED;
11 In the morning and certainly berserk (4)
AMOK: AM-OK;
12 By the way is pickle dark? (7)
OBSCURE: OB-S-CURE; OB=obiter=by the way; is=’S; pickle=CURE;
13 Quiet old woman during day is battling eating condition (9)
DYSPHAGIA: (day is)* surrounds P-HAG;
14 Trump and right senses cut: excellent in the ’hood (7)
SLAMMIN: SLAM-MIN(d); ‘hood=US slang for neighbourhood;
16 We go through Metamorphosis in Latin, a Bible of its age (6)
LARVAE: L-A-RV-AE;
18 Outrage of flaming frontiersman heading off (5)
ARSON: (c)ARSON; reference Kit Carson 1809-1868
20 Large backing devoted to Labour expelling first trio — wonderful (8)
GLORIOUS: LG reversed-(lab)ORIOUS;
22 Stone lying on the ground is hardly ever noisy (8)
STREPENT: ST-REPENT;
25 Botswanan coughs it up — girl pouring wine stands by it (5)
THEBE: ‘T-HEBE; money in Botswana, to cough up is to pay;
26 A kid is relaxed (6, two words)
AT,EASE: A-TEASE;
29 Wig is leading fashion (7, two words)
START,ON: STAR-TON; wig=nag
30 Royal exes accommodating by choice (9, two words)
CIVIL,LIST: CIVIL-LIST; abolished in the UK in 2011;
31 This whips up rent trouble (7)
TORNADO: TORN-ADO;
32 Potty for one not old (4)
INTO: I-N’T-O;
33 Spain with special housing estate, say demanding inclination (6)
ESCARP: E-S(CAR)P;
34 One who picks on new form of protection (6)
NAGGER: N-AGGER; an AGGER is a defensive mound
DOWN
1 In Holyrood struggle with earls needing a shake-up (6)
WARSLE: (w + earls)*;
2 One’s easily influenced, one’s quitting graft? (7)
IMPLANT: I’M-PL(i)ANT;
3 Fallen crew adore lack of courage in Spenser (9)
COWARDREE: (crew adore)*;
4 Variety magician is revealing sources (5)
ETYMA: hidden (vari)ETY-MA(gician)
5 Char is overhead fitting one inside shelter (8, two words)
ROSIE,LEE: ROS(I)E-LEE; tea;
7 Tease this Aramaic goddess of war (6)
ISHTAR: (this)*-AR;
8 Who wouldn’t strike director over being near-the-knuckle once? (7)
SCABRID: SCAB-DIR reversed;
9 Fine grass with root pulled up (4)
ERIC: grass=rice then move the “e” to the top;
10 Beloved non-smoker finds secrecy and hiding once (6)
DEARNS: DEAR-NS;
15 Is old language good for establishing a pure culture? (9)
ISOLATING: IS-O-LATIN-G;
17 Privates dropped from start of reign? This leads to firm action (8)
CONATION: C(or)ONATION; OR=Ordinary Ranks
19 US ref including fashionable plant (7)
ZEBRINA: ZEBR(IN)A; refs in US football wear zebra striped shirts;
21 Trained girl, thus not sweet as before, becomes neurologist, possibly (7)
UNSOOTE: (neurologist – girl)*;
22 Pompous about pinch of curry spice used by Moses (6)
STACTE: STA(C)TE; C from C(urry);
23 Unruly lad stuck into a salesman (6)
PEDLAR: PER = a contains (lad)*;
24 Designed, as they say, gold trainer (6)
MENTOR: sounds like “meant”-OR;
27 Drum when rested up (5)
TASSA: AS-SET reversed;
28 Prejudice getting nothing for anonymous short stories (4)
BIOS: prejudice=bias then change “a” to “o”;
Magoo, Mohn, Kevin and so many others who are just trying to help.
Anyhoo… Mephisto is generally a much more difficult baseline crossword, however the definitions are meant to be unambiguous, which is why we don’t really cover definitions much, and focus on the wordplay. Since there are many more obscure words, the wordplay is the key to the puzzle.
Added to that, comparatively few tackle Mephisto, so there’s not usually that many commenters here.