Ultra realistic product photograph, 4:5 vertical. A copper Moscow mule mug on a dark bar surface, condensation droplets on the copper, a sprig of fresh mint and a lime wedge at the rim. MATERIAL PHYSICS — COPPER MUG: Solid copper Moscow mule mug — the traditional barrel shape with a brass handle. The copper surface is bright and relatively new — not heavily patinated, but showing the first signs of oxidation as subtle darker spots near the base where moisture collects. The most important feature: CONDENSATION. The mug is ice-cold from the drink inside, and the warm bar air has condensed on the exterior surface as hundreds of small water droplets. The droplets vary in size — tiny mist-like beads at the top where the copper is coldest from the ice, larger drops lower where they have merged and begun to run. Several drops have traced vertical paths down the mug surface — the trail is visible as a wet streak with a larger drop at the bottom. Each droplet catches the overhead light as an individual bright specular point — the mug is covered in a constellation of tiny highlights. MATERIAL PHYSICS — DRINK: The drink is visible at the top of the mug — a pale golden-green liquid (ginger beer, vodka, lime) with crushed ice visible at the surface. Small carbonation bubbles cling to the inner copper wall above the liquid line. MATERIAL PHYSICS — GARNISH: A sprig of fresh spearmint — 4 leaves, bright green, slightly dewy with tiny water droplets on the leaf surfaces from contact with the cold drink. The mint rests on the ice surface with the stem submerged. A lime wedge — bright green skin, pale green-white pith, translucent green-yellow flesh segments visible at the cut face — is perched on the mug rim, a small notch cut in the wedge to grip the rim edge. MATERIAL PHYSICS — BAR SURFACE: Dark stained wood bar top — nearly black, with a subtle grain pattern visible. The wood has a satin lacquer finish — semi-reflective, showing a soft blurred reflection of the copper mug below it. A few stray water drops on the bar surface around the mug base from condensation run-off. CAMERA: Sony A7R V, 90mm macro, f/4, ISO 200. LIGHTING: A single warm overhead spot — the kind of focused pendant light above a bar station. The light is warm (3000K) and somewhat hard — creating defined bright highlights on the copper surface and on each condensation droplet. The mint leaves are slightly backlit by the spot — the thinnest parts of the leaves glow translucent green. The lime wedge catches the light on its wet flesh surface as a bright acid-green highlight. BACKGROUND: Dark bar environment in soft blur — the suggestion of bottles on shelves, amber liquid in glass, warm ambient light. Nothing identifiable. NEGATIVE PROMPT: bright, daylight, outdoor, multiple drinks, hands, person, straw, text, watermark, logo, CGI, clean dry mug.