Cheese food products are gateway cheese-ish almost-cheeses to the real thing. They’re part of what in this household are called the Fluorescent Food Group: processed foods so colorful that they light up the eyes as much or more than the taste buds. Cheetos® are a familiar product in this food group.
In the mists of the dysfunctional past, as a pre-teen/early teen, i could not handle actual cheese (for reasons unknown to this day). Started briefly with canned pseudo-cheese, manufactured by professionals to have a zingy, pleasing taste to warped American taste buds of the era (at least mine). Moved from there to squeeze cheeses: plastic sausage-shaped containers with a reclosable opening: similar material without the propellant. From there i moved to the same stuff in glass jars, likely similar to what Shotha mentions. Here’s an illustration i found of the latter 2 categories:
Note the Chicago 90, Ill. address. Apart from illin’ and illness and related puns, that tells us that this ad predates USPS Zip codes, so it would be from the very early 1960s or second half of the 1950s. The products looked about the same when i had them in the early 1970s.
After the jar cheese food products, i finally made it to real cheese (circa mid-adolescence), and have never looked back.
Here’s what your complexion looks like if you eat too much from the fluorescent food group:
View attachment 138478
PNI?
Pinochle Nitrogen Infusion?
Perpetual Nutmeg Immersion?
Pacific Northwestern Indigo?
Punch Nards Indecisively?
I don’t actually know littlefairywren’s intended meaning. Guessing is more fun than taking all of 20 seconds to look it up. Actually i just did look it up now right before posting, and none of what’s listed makes sense in this context. Prescott New Instructions is the top-rated real-world answer on the site i checked.