An interesting grid for an average puzzle. In the blog, the definition in the clue is underlined and followed by the answer; the parsing; any comments
ACROSS
1 If this shipyard worker were on time he’d be prompt (6)
RIGGER: (t)RIGGER;
6 It is contracted in longer recess (7)
MORTISE: MOR(TIS)E;
12 Ordinary poor-John dished out but for Jack it’s a mothering thing (8)
OOPHORON: O-(poor john – j)*; O=ordinary; jack=j (cards);
13 Yankee male in to plop on a plate small tarts (9)
DOLLYMOPS: DOLL(Y-M)OP-S;
15 Concerned with plague, just like African bosses (7)
INDUNAS: IN-DUN-AS; plague=DUN;
16 Ensure bishop’s office starts from these ordinands (5, two words)
SEE,TO: SEE-T(hese)-O(rdinands);
17 Cheerful fellow from All Souls, say, finding flower (7)
GLADDON: GLAD-DON;
19 Pegasus had such cobblers (13)
HORSEFEATHERS: HORSE-FEATHERS; cobblers=nonsense;
21 One in huff no longer to curry favour with Sturgeon (7)
CUITTLE: CU(I)TTLE; scots word for curry favour;
23 Smacker you get in concert (5)
ONCER: hidden (c)ONCER(t); smacker=one pound=ONCER;
25 Stage where certain daughters assemble tragedy destroying one son (7)
DIASTER: DI(s)ASTER;
26 Being a Remainer, I hope rule gets fixed (9)
EUROPHILE: (I hope rule)*;
28 Unexcited about snow having particles equally disposed (8)
EVEN-EVEN: E(VENE)VEN;
29 Are fruit dead? Assessed age again (7)
REDATED: RE-DATE-D; are=RE;
30 Sonant whirling dervish (6)
SANTON: (sonant)*;
DOWN
1 Somewhat excellent / bit of salad (6)
RADISH: two meanings
2 Stern and sure rugged (9)
IRONBOUND: IRON-BOUND;
3 Fantastic blocked grid pulled a fast one (11)
GOLDBRICKED: (blocked grid)*;
4 Exile adult wearing clog (5)
GALUT: G(A)LUT;
5 Such a saga could be ever moanful (11, two words)
ROMAN, FLEUVE: (ever moanful)*;
6 Low moment ringing round (3)
MOO: M(O)O;
7 Blocks choices about javelins (11)
OPPILATIONS: OP(PILA)TIONS;
8 Book will be read in punt in the future (4)
TO-BE; TO(B)E;
9 I goof up over one with laid-back chair — I’ll recover ground (11)
IRREDENTIST: I-ERR reversed-DENTIST;
10 Donne’s done — from a pointed POV? (5)
END-ON; (donne)*;
11 Cleaner tends to struggle around yard (6)
SYNDET: (tends)* surrounds Y=yard;
14 Ripped into passé praise of folk poem’s form (9)
STORNELLO: S(TORN)ELL-O;
18 A tense quarrel about suppliers of Thatcher’s material (6)
ATTAPS: A-T-SPAT reversed;
20 Stole from Ramsay, "Soften grain by soaking in tin" (6)
SCREEN: S(CREE)N; tin=SN; soften grain=CREE; reference Allan Ramsay, Scottish poet;
21 Disguise bay rum, just what’s left of it (5)
COVER: COVE-R(um);
22 Pale Roman before grasping female (5)
ASHEN: A(SHE)N; AN=ante;
24 Pay up for heater (4)
ETNA: ANTE reversed;
27 Bloody browned off with bits of those disappearing (3)
RED: (b-o)RED; b from b(rowned); o from o(ff);
ACROSS
1 If this shipyard worker were on time he’d be prompt (6)
RIGGER: (t)RIGGER;
6 It is contracted in longer recess (7)
MORTISE: MOR(TIS)E;
12 Ordinary poor-John dished out but for Jack it’s a mothering thing (8)
OOPHORON: O-(poor john – j)*; O=ordinary; jack=j (cards);
13 Yankee male in to plop on a plate small tarts (9)
DOLLYMOPS: DOLL(Y-M)OP-S;
15 Concerned with plague, just like African bosses (7)
INDUNAS: IN-DUN-AS; plague=DUN;
16 Ensure bishop’s office starts from these ordinands (5, two words)
SEE,TO: SEE-T(hese)-O(rdinands);
17 Cheerful fellow from All Souls, say, finding flower (7)
GLADDON: GLAD-DON;
19 Pegasus had such cobblers (13)
HORSEFEATHERS: HORSE-FEATHERS; cobblers=nonsense;
21 One in huff no longer to curry favour with Sturgeon (7)
CUITTLE: CU(I)TTLE; scots word for curry favour;
23 Smacker you get in concert (5)
ONCER: hidden (c)ONCER(t); smacker=one pound=ONCER;
25 Stage where certain daughters assemble tragedy destroying one son (7)
DIASTER: DI(s)ASTER;
26 Being a Remainer, I hope rule gets fixed (9)
EUROPHILE: (I hope rule)*;
28 Unexcited about snow having particles equally disposed (8)
EVEN-EVEN: E(VENE)VEN;
29 Are fruit dead? Assessed age again (7)
REDATED: RE-DATE-D; are=RE;
30 Sonant whirling dervish (6)
SANTON: (sonant)*;
DOWN
1 Somewhat excellent / bit of salad (6)
RADISH: two meanings
2 Stern and sure rugged (9)
IRONBOUND: IRON-BOUND;
3 Fantastic blocked grid pulled a fast one (11)
GOLDBRICKED: (blocked grid)*;
4 Exile adult wearing clog (5)
GALUT: G(A)LUT;
5 Such a saga could be ever moanful (11, two words)
ROMAN, FLEUVE: (ever moanful)*;
6 Low moment ringing round (3)
MOO: M(O)O;
7 Blocks choices about javelins (11)
OPPILATIONS: OP(PILA)TIONS;
8 Book will be read in punt in the future (4)
TO-BE; TO(B)E;
9 I goof up over one with laid-back chair — I’ll recover ground (11)
IRREDENTIST: I-ERR reversed-DENTIST;
10 Donne’s done — from a pointed POV? (5)
END-ON; (donne)*;
11 Cleaner tends to struggle around yard (6)
SYNDET: (tends)* surrounds Y=yard;
14 Ripped into passé praise of folk poem’s form (9)
STORNELLO: S(TORN)ELL-O;
18 A tense quarrel about suppliers of Thatcher’s material (6)
ATTAPS: A-T-SPAT reversed;
20 Stole from Ramsay, "Soften grain by soaking in tin" (6)
SCREEN: S(CREE)N; tin=SN; soften grain=CREE; reference Allan Ramsay, Scottish poet;
21 Disguise bay rum, just what’s left of it (5)
COVER: COVE-R(um);
22 Pale Roman before grasping female (5)
ASHEN: A(SHE)N; AN=ante;
24 Pay up for heater (4)
ETNA: ANTE reversed;
27 Bloody browned off with bits of those disappearing (3)
RED: (b-o)RED; b from b(rowned); o from o(ff);