Speaking of seed oils I don't actually put peanut oil on the list.
Nor other nut oils.
But that's neither here nor there.
I have been trying to get away from the other stuff though.
I looked at Hellmann's mayonnaise with olive oil mayonnaise and it's a total scam.
Still has soybean oil in it or some other highly processed seed oil.
Back years ago I made mayonnaise out of hight octane extra virgin olive oil and it was fantastic.
People on the forum said it had too strong a flavor for them.
Baffling but whatever.
That's when you pick an olive oil that doesn't have a strong flavor.
I would imagine pecan oil would be good too.
It has a neutral flavor.
I love walnut oil but it's expensive and beings bad sad memories.
Not to be a downer but I was giving my wife spoonfuls of walnut oil to help keep her alive during her last days.
Doctor recommended because she was starving to death.

Well anyway since mayonnaise is the prime ingredient then one must start from there for a fantastic ranch dressing.
No added sugar.
No HFCS.
No soybean or other hateful seed oil.
Lots of good orange not yellow industrial egg yolks and little to no egg whites.
High quality vinegar not chemical plant vinegar or lime juice if you prefer.
I'm taking orders as we speak.
$50.00 for 32 ounces.
But seriously the type of eggs used in Germany is the number one reason you can't duplicate it here in the US with industrial eggs.
They also have strict laws on what can and can't be called mayonnaise.
I wish I had free range ducks, now that would make a good mayonnaise.
Thusly an outstanding ranch dressing.
From the foundation up so too speak.

I finally made the salad dressing that is as close to my mom's as I have come so far. I made just a small amount, enough to cover my lunch of sliced cukes, onions, and tomatoes, so no measurements. Roughly equal parts of sour cream and kefir (same as buttermilk) with a small dab of Hellman's mayo. Salt, pepper, chopped dill mixed in. If it seems too thick you can add a bit of milk to thin. I bought the kefir on a lark, seems it's touted as a health drink, but used basically the same as buttermilk.

Just throwing this out there...the Hidden Valley ranch made from powder is a lot better than their bottled version. Maybe because you add your own mayo and milk to mix in with the powder? I always add a bit more powder than called for to thicken it up as it's mainly used for dipping veggies.

BTW, Sam's has stopped carrying the 16 oz jar of HVR mix and subbed in a different brand which is horrible! Contract expired? Contract pricing dispute? I finally found an 8 oz jar of HVR at a local grocery. Gotta find a good homemade ranch recipe.

I decided to forgo salad dressing altogether and go for the powdered ranch dips (as opposed to powdered ranch dressings). We got some sour cream and Winco brand ranch dip, mixed it together, and it was excellent. Nice and thick, too.