No, the mayonnaise does NOT go in the shake! Here's two recipes from the same cup of walnuts. (ingredients are highlighted with italics)
1 cup walnuts, soaked and drained
2 cups water
Place all ingredients into the wet container. Turn on variable speed 1 then increase to 10. Turn to high for 2 minutes. Strain 1-1/2 cups walnut milk through a filter bag back into the wet container.
Soak 2 pitted dates and 4 dried apricots while making the mayonnaise.
Place contents of filter bag into a bowl and add:
1/2 teaspoon lemon juice
1/2 teaspoon cayenne pepper powder or to taste
1/4 teaspoon salt or to taste.
The mayonnaise is finished! Now back to the shake…
Add 4 ice cubes to the wet container. Turn on variable speed 1 then increase to 10. Turn to high for 30 seconds or until blended.