The current meat production and consumption model is a socially acute question with environmental implications. Developing people's environmental awareness is necessary for adopting more environmentally friendly eating habits. This work studies the possible effects of a Cartography of Controversy didactic device on the environmental awareness of preservice preschool teachers. Their answers to an openended question about their meat consumption were analysed before and after the activity. The results show no significant changes in their willingness to reduce meat consumption after the activity. Health or animal welfare seem to be more relevant reasons for them than environmental ones. However, there is some increase in the environmental reasons following participation in the activity.