Slice the cucumber, set aside
Mix sour cream or Greek yogurt (or a mixture), coconut milk, lemongrass, salt, lime juice, honey, chopped mint and Thai Chili in a food processor and process until all the ingredients are blended well, scraping down sides as needed. An alternative is to use a handheld immersion blender if you have one.
In a bowl blend mixture with lime zest and check if additional salt is needed.
Add in sliced cucumbers, mix well.
Chill in fridge for 1-2 hours, serve over fresh lettuce.
Garnish with some of the spicy peanuts and julienned mint Enjoy!!