Notes on verification

WebMD states the ~10 mg figure verbatim, and independent USDA-linked sources bracket it (5-15 mg range), supporting the approximation. However, variability by recipe/brand (some report up to 25-36 mg) means the exact figure is approximate rather than precise. [cascade flags: aggregator_dropped_primary_exists,wikipedia_dropped_other_sources_exist | tier=bronze indep_score=0.525 clusters=2 claim_tier=notable | framework convergence=partial on USDA FoodData Central nutrient database for cocoa/hot cocoa caffeine values (upstreams: USDA FoodData Central) — publishers independent, evidence may not be | kind=empirical eligibility=high]