Seth Roberts recommends "extra light olive oil" (also known as "extra light tasting olive oil"). This is a type of olive oil that has basically no flavor. (It does have a bit of a smell, so I hold my nose when I drink it. Note also that despite the similar names, this is not the same as "extra virgin olive oil", whose flavor and aftertaste are too strong for Shangri-La use.)
Today's post, The Unfinished Mystery of the Shangri-La Diet was originally published on 10 April 2009. A summary (taken from the LW wiki):
Discuss the post here (rather than in the comments to the original post).
This post is part of the Rerunning the Sequences series, where we'll be going through Eliezer Yudkowsky's old posts in order so that people who are interested can (re-)read and discuss them. The previous post was Beware of Other-Optimizing, and you can use the sequence_reruns tag or rss feed to follow the rest of the series.
Sequence reruns are a community-driven effort. You can participate by re-reading the sequence post, discussing it here, posting the next day's sequence reruns post, or summarizing forthcoming articles on the wiki. Go here for more details, or to have meta discussions about the Rerunning the Sequences series.