Grind coffee to medium fine consistency (~18 on a Comandante, ~2 on an Ode, ~ 40 on a Niche).
Add filter to cap, pre-wet the filter and prepare AeroPress in the upright method.
Slice the orange down the center (2-3cm thick) and add slice to the bottom of the AeroPress on the paper filter.
Add 150g ice to the cup you plan to brew into.
Place AeroPress on top of cup in the upright position and add coffee to AeroPress cylinder.
Add 50g 210°F (99°C) water to cylinder and stir aggressively 10x.
At 30s add the additional 100g of water and stir slowly.
Wait until 1:30-1:45 and slowly push down into cup.
Slice the remaining orange half into quarters. Squeeze one quarter into the coffee (to taste) and rub around the rim of the glass. Garnish with the other orange quarter, swirl and enjoy!