For the ternary phosvitin/phospholipid/SDS emulsion, we first prepared the oil phase by dissolving 10 mg/ml of L-α-lecithin powder, which contains >94% phosphatidylcholine (429415, Sigma-Aldrich) in the oil before continuing with the steps outlined for the phosvitin emulsion. For the ternary apoB/phospholipid/SDS emulsion, we dissolved 10 mg/ml of lyophilized LDL into the oil phase using a magnetic stirrer. Here, LDL particles were used as carriers to deliver both apoB and phospholipids to the droplet interface. Subsequently, SDS was added to the aqueous phase of both model systems.