I had never heard of lingonberries
This made no sense to me initially, as there's an Ikea every 7 or 8 feet in southern California.
There's one in San Diego, and it's in the touristy section of town that most natives avoid like the plague. I've actually never walked into an Ikea store in my life. Funny thing is my friends also mentioned Ikea when I said I didn't know what lingonberries were. Honestly, it would never occur to me to go to a furniture store to eat food, but apparently they have a restaurant. Go figure!
Then, I remembered that Ikea didn't open in the US until the mid 80's and correlating that with the odd temporal warp you seem to be stuck in led me to believe it is actually 1983 in your world.
Or it's that they have really cheap and crappy furniture. I pretty much went straight from cinderblocks and planks to higher quality stuff, skipping Ikea entirely. I don't own anything from Ikea and have no plans to ever do so. Do people really go to these stores that often? Why?