เชิงซ้อนFor the successful production of functional multiple emulsions, it is crucial to monitor the amount of encapsulated inner phase and thus the encapsulation efficiency EE. In order to do this, only few methods are available for oil-in-water-in-oil emulsions. We compare two possible methods – rheometric determination of EE and determination by NMR. These techniques are applied to OWO emulsions with internally gelled water phase, the main purpose of this being an increased stability against coalescence of inner oil droplets due to reduced droplet movement. It can be seen that both measurement techniques are suitable for qualitative comparison of OWO emulsions’ EE. Harsher processing conditions result in smaller outer droplet sizes and reduced EE. It is also shown that a higher amount of the hydrophilic emulsifier chosen improves the EE at sensitive production. Higher stability is provided by gelling of the water phase by hydrocolloids.