Two ways to a sancocho cream: from a packet of soup mix with potato, or by blending leftover sancocho with its own broth. Fifteen minutes either way.
The second method is the better one and it is the reason this page exists. Sancocho is a big Sunday dish and there is almost always some left, and blended with its own broth it becomes a completely different soup on Monday. Take the bones and the meat out first, which the instruction says: bones will not blend and meat turns stringy. Dissolve the packet in cold water, not hot. Powdered soup mixes lump instantly in hot water and the lumps never break up. A cup of cold water and a whisk, and then it goes into the hot pot. Keep stirring once it is in. Anything thickened with starch settles on the bottom of the pot and scorches, and a scorched taste goes through the whole thing.