Ask Me Every Time Cookie Option
I would like for Vivaldi to include the Ask Me Every Time Cookie Option to its functionality of either allowing or disallowing cookies.
There is no such option.
You can allow, block or delete at closing of browser.
Internal settings at chrome://settings/content/cookies
You could look to see if there is anything like this in the feature requests thread, https://forum.vivaldi.net/topic/20968/feature-requests-for-1-13/, or add it yourself if it is missing
But you cant request what is not even in Chromium code yet.