[jamesk_au]

Those behind the study appear to be of the view that it can't be done:

"This study could not be designed in a double-blind fashion due to the nature of meditation training and placebo conditioning. Specifically, placebo cream could not be applied to all groups because this manipulation could potentially elicit analgesia even though the subjects were informed that the cream was inert (Kaptchuk et al., 2010). Furthermore, whereas subjects in the placebo-induced analgesia and book-listening control groups were clearly aware of their group assignment, subjects in the mindfulness and sham-mindfulness groups were blinded to their intervention assignment. For the mindfulness and sham-mindfulness groups, responses related to psychosocial influences (i.e., demand characteristics) presumably were minimal given that no significant differences in “perceived meditative effectiveness” were observed (p = 0.88; Table 2)."