One strategy that often works when presenting a new idea is to start with what people already do and go from there. So what kinds of plants do Cubans use in the dishes they make? We lived in the Dominican Republic for 9 nine years and ate standard Dominican lunches most days. Typically there were salads of tomatoes and cabbage or lettuce, with a little grated carrot in there. In terms of the seasonings, the women who usually made our midday meal were open to including garlic chives as part of the seasoning. Throwing leafy greens into a meat sauce was also not a hard sell.
I also lived and worked in Haiti for seven years, “full time” and for about four years coming and going between the DR and Haiti. Haiti was easy because family already eat a diversity of greens. There it was a matter of intensifying the production and presenting a few additional options. Moringa was easy to promote in Haiti because it has gotten a lot of press internationally and they already used it occasionally as medicine/food. We were living in the DR when we heard that Fidel Castro was promoting moringa in Cuba and that made it wildly popular for a while in the DR.
Do people have a cow or a goat or a few sheep that they raise as a source of income for emergencies? Most of the leaves that are super nutritious for people are also super helpful with animal production. Cows, goats and sheep can benefit from eating things like moringa. Offspring often develop more rapidly and therefore reach market weights more quickly when their mothers are eating highly nutritious leaves. This is not a guaranteed connection between agriculture and human nutrition, but it is a way to validate the ways that people already feed themselves while offering small but significant and persistent improvements.