Did Seoul Milk cheddar cheese slices, 20 slices (South Korea) shrink?

Size FactsDid it shrink? Yes
Before400 g
After360 g
−10.0%smaller
Price per 100 g · if the price stayed the same+11.1%Hypothetical: the size cut alone. The source recorded no shelf prices.

How big a cut? The joint 33rd-largest of 65 documented dairy cuts (tied with 11 others); a bigger cut than 31% of all 1,366 cases in the library. See the biggest cuts →

When
2023 · reported 13 Dec 2023
Country
South Korea
Brand
Seoul Milk
Category
Dairy
Source
yna.co.kr

Source and evidence

Yonhap — Korea Consumer Agency finds 37 products shrank in a year (13 Dec 2023) yna.co.kr

Source fetched 2026-10-29.

Same 20 slices, each 20 g to 18 g; the 15-slice pack went 300 g to 270 g. Seoul Milk said rivals already used 18 g slices and it matched them instead of raising the price.

Evidence
Typegovernment consumer agency survey (Korea Consumer Agency)
Confidencehigh

Check the math in the calculator.

What the source says

“…32 치즈 (서울우유협동조합) 체다치즈(20매) 400g 360g 40g 10.0% 2023.7. 참가격 33 체다치즈(15매) 300g 270g 30g 10.0% 2023.7. 34 핫도그 (풀무원) 모짜렐라 핫도그 400g (5개입) 320g (4개입) 80g 20.0% 2023.3.”

More from South Korea: the South Korea shrinkflation list has all 35 documented cases, sortable and filterable.

Topic guide: butter, cheese and yogurt shrinkflation, every documented case in one place, brand by brand.

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Cite this case

ShrinkRadar, “Did Seoul Milk cheddar cheese slices, 20 slices (South Korea) shrink? 400 g → 360 g”, https://shrinkradar.com/cases/seoul-milk-cheddar-cheese-slices-20-slices-south-korea-2023.html, accessed 2026-11-05. Original source: Yonhap — Korea Consumer Agency finds 37 products shrank in a year (13 Dec 2023) (https://www.yna.co.kr/view/AKR20231212143900030).

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