The scam in one explanation
Rewards buy steaks; chicken contamination creates a refund claim. Dee’s extra zero expands the order to four thousand.
Supporting source ↗CASE FILE · S10 E04
Charlie Work
S10 E04Photograph not available
When a surprise health inspection falls on the same day as one of the gang's less hygienic schemes, Charlie tries to keep the gang working together to make sure Paddy's makes the grade.
THE SHORT VERSION · SPOILERS AHEAD
INSIDE THE CASE.
The grade is Charlie’s victory
Sandy awards the highest grade despite the dumpster setback. The gang remains focused on its scam and ignores his work.
Supporting source ↗A restaurant made in moments
A painted sign and an alley table temporarily turn the pub into a steakhouse for the delivery driver.
Supporting source ↗Two kinds of concealment
The inspection route passes hidden birds and a painted Frank; the apparent order depends on constant movement behind Sandy’s back.
Supporting source ↗THE EVIDENCE
THINGS IN THIS EPISODE.
Characters
Charlie Kelly180 other recorded episodes
Charlie guides Sandy through the inspection.Source ↗
Dee Reynolds179 other recorded episodes
Dee receives instructions for the driver’s meal.Source ↗
Dennis Reynolds176 other recorded episodes
Dennis maintains his bartender performance.Source ↗
Frank Reynolds171 other recorded episodes
Frank stands beside the steak packages before hiding the truck.Source ↗
Sandy LawlerOnly recorded here so far
Sandy delivers her inspection findings outside the bar.Source ↗
The steak delivery driverOnly recorded here so far
Charlie escorts the driver inside.Source ↗
Locations
Dumpsters3 other recorded episodes
Charlie instructs Dee to clear the improvised dining area.Source ↗
Paddy’s Pub147 other recorded episodes
Charlie coordinates the inspection throughout the bar.Source ↗
Objects
Carbon monoxide detectorOnly recorded here so far
Dee reaches up to test the basement alarm.Source ↗
Carmine’s steakhouse signOnly recorded here so far
The sign presents the bar as Carmine’s steakhouse.Source ↗
Homemade signs5 other recorded episodes
Dennis holds the newly painted restaurant sign.Source ↗
Joke stoolOnly recorded here so far
Charlie repeatedly slams a stool to weaken it.Source ↗
The glory hole3 other recorded episodes
Charlie covers the opening in the partition.Source ↗
Vacuum sealerOnly recorded here so far
Dennis and Dee work with the packaging machine.Source ↗
Food & drinks
Schemes
Airline miles scamOnly recorded here so far
Charlie reconstructs the rewards-and-refund scam.Source ↗
Running jokes
Charlie work13 other recorded episodes
Charlie repairs the restroom before the inspection.Source ↗
Costumes
Body paint1 other recorded episode
Frank paints a shirt onto his torso.Source ↗
Music
Miscellaneous
Health inspection2 other recorded episodes
Sandy begins by inspecting the bathrooms.Source ↗
Live chickensOnly recorded here so far
Live chickens crowd the back office.Source ↗
FOLLOW THE THREAD
CONNECTED EPISODES.
S04 E05 Connected through Recorder, The glory hole, Paddy’s Pub and 5 more.
S05 E12 
Connected through Body paint, Paddy’s Pub, Frank Reynolds and 4 more.
S18 E01 
Connected through Blenders, Paddy’s Pub, Frank Reynolds and 4 more.
S04 E06 Connected through The glory hole, Air vents, Paddy’s Pub and 5 more.
SOURCES & NOTES.
Tags document researched occurrences, not every appearance. Read the research notes and attribution.