Possible Clues:

• Wild fruit is a feature of it
• *Extremely retro food regimen?
• Regimen based on the eating habits of early humans
• Meal plan that's both ancient and modern
• 'Caveman' food regimen
• Practice advocated by nutritionist Loren Cordain
• Regimen that requires early meals?
• Old/new food regimen
• Faddish food regimen