Head gasket blown. Pink/orange tapioca. Have a few questions as to cleanup before proceeding.

Backstory: After reading up on here, I have been getting things ready to do the egr clean/replacement maintenance for my two 2010 prius(s). I have collected a bunch of manifolds and coolers from the pick n pull yard and was in the process of cleaning them in my ultrasonic and in various other solution baths. My plan was to keep one extra each on the shelf for the future maintenance. They are all clean as factory new now.

First car (My boy blue) has had the rougher life, came from the midwest and has 174K miles. Did the first attempt swap but I must have messed something up and it threw a ton of new codes. I think i had a gasket unseat or incorrect torque specs leading to a leak. Took me about a week of rewatching videos to get up the confidence after the first attempt and get it all back together correctly.

During this exact time, I was driving my second (Big Red) and it has been running perfect coming close to 200k. I was using it as a reference for tube routing, correct bolts and such. That is when I noticed my fluid was orange. Pulled off the cap and it was tapioca (photos). Grabbed the turkey baster and transferred it to a cup. Thick, greasy, and disappointing. There was no overheating, no death rattle on start up, but did get a p0102 the previous day.

I have watched hours of rebuild videos from all creators (especially the one recommended in the sticky) and think I am ready to start. But none of the videos had my exact situation.

Here is the questions:

How do I go about cleaning the goop out of everything?

Where else will this tapioca be? Inside the radiator? The cylinders?

Has anyone else run across this style of blowout before?