The present invention relates to a low fatty oil-in-water (W / O) emulsion comprising a fatty phase in an amount of at most 60% by weight relative to the total weight of the emulsion, an aqueous phase dispersed within said fatty phase and an emulsifier composition , The above-mentioned emulsifier composition comprises an acetone insoluble matter (AI) component containing phosphatidylcholine (PC), phosphatidylinositol (PI), phosphatidylethanolamine (PE) and phosphatidic acid (PA), wherein PC is an emulsifier In an amount up to 15.5%, based on the total weight of the composition, and the emulsifier composition is characterized by a weight ratio R of at most 65%, said ratio R being defined as:(1) Wherein PC + PI + PE + PA is the sum of the individual weights of each of the above components of the AI component and AI is the total weight of the AI component.本発明は、エマルションの全重量に対して最大で60重量%の量の脂肪相、上記脂肪相内に分散した水性相および乳化剤組成物を含む低脂肪油中水型(W/O)エマルションに関し、上記乳化剤組成物は、ホスファチジルコリン(PC)、ホスファチジルイノシトール(PI)、ホスファチジルエタノールアミン(PE)およびホスファチジン酸(PA)を含有するアセトン不溶物(AI)成分を含み、ここで、PCは、乳化剤組成物の全重量に対して最大で15.5%の量であり、そして上記乳化剤組成物は最大で65%の重量比Rを特徴とし、当該比Rは以下として定義される:【数1】[式中、PC+PI+PE+PAは、AI成分の上記の各構成成分の個々の重量の合計であり、AIは、AI成分の全重量である]。