Most of the time I make my own but do buy some sometimes. Lately the jars are 28 ounces and the latest one I bought (the ‘fancy’ Prego Farmer’s Market) is only 23.5 ounces. That isn’t really enough for a pound of spaghetti.
If I have to add a can of tomato sauce and add some extra spices the convenience factor of jarred sauce is pretty much gone.
Yes, I am pretty sure they did used to be 32 ounces.
I recently noticed sugar is now a 4 pound bag, too.
And the Breyer’s ice cream container is now smaller and tapered towards the bottom.
And toilet paper now has a HUGE inner cardboard roll.
It is all in the name of not raising prices by giving us less.
I just quickly looked at ads from 1988, just to pick a year, and they were 32 oz then, at least the Ragu. We personally never used a whole jar on a pound of spaghetti, though, but I think we use less sauce than most people.
Yogurt cups are 6 oz, used to be an actual 8 oz cup. Which totally messes up at least one recipe of mine, and the only alternative is to buy a big tub of plain yogurt so I can measure out my own.
A “pound” of coffee has been 12 or 13 oz for quite some time.
A two pound can of coffee now weighs 26oz.
Pretty much all name brand ice cream “half gallons” are now only 3 pints.
Also, most hog dog packages have gone from 16 ounces to 12. Nathan’s even changed the name of its “bigger than the bun” hot dogs to “bun-length.” Hebrew National does sell its “dinner franks” in both 12 and 16-ounce packages, however.
About spaghetti sauce specifically, in the past pretty much all the jars were 32 oz. Now there are several different sizes - the “fancy stuff” comes in smaller containers.
I noticed my new tube of toothpaste was .2 ounces smaller than the one I was throwing away. That’s how they Getchya!
Everything is smaller for a higher price. It’s all about the bottom line. We are about a minute away from overpriced Soylent green.
I just gave up…buy what I have to, make the best of it.
Plus, my tomato plants may have gotten too cold last night. Woe is me:(
You’re behind the time: most yogurt is 5.3 ounces.
Cans of tuna have shrunk down to 5 oz. I remember when they were over six.
And that new smaller tube probably has some of the volume taken up by air. 
I bitched about this in another thread, so I apologize for those of you reading me say this again.
I just bought some batteries. When I got home, I noticed in the fine print it said “batteries not included.”*
*Steven Wright, I think. I know I stole it from somebody.
Dammit, I thought so. I was aware of lots of the other stuff like smaller ice cream cartons and toilet paper tube shenanigans, but dammit, a pound of spaghetti gets a quart of sauce; the two things go together by design. I suppose the answer is going to be 14 ounce ‘pounds’ of spaghetti – which would actually be an improvement over the current situation.
Seems with everything you go to buy these days somebody is trying to trick you, fool you, or confuse you. 
I’ve never made a pound of spaghetti at a time. So I guess I never noticed that. One jar does cover making it twice (typically 1lb total) for my kids, but maybe that’s because we add meat and they don’t eat a lot. Mostly this stuff doesn’t bother me because the volume is clearly marked. I mean, the toilet paper roll size doesn’t matter if the package says it’s so many sheets of a certain size or 312 sq. ft or whatever. The ice cream thing happened a long time ago and sometimes I find decent brands that are still a 1/2 gallon or 1.75 instead of 1.5 quarts.
Cheer up. Pretty soon the spaghetti packages will be downsized too and we’ll be back to the proper ratio.
mmm
The 64oz cartons of orange juice are now 59oz.
My brother use to say, " if you don’t buy food then sooner or later you don’t need toilet paper." He was a defeatist. Poor guy.
I could have sworn some already have. Looking online, though, it seems to only the the whole grain, organic, and gluten-free versions that come in smaller sizes like 13.5 oz and 12 oz.
It’s screwed up some of my recipes, too. I can only make Gramma’s cavitini when I’ve already got a half-jar lying around from some other dish (to add to another full jar).
Being a defeatist is stupid and useless. He might as well give that up too. 