Disclosed are concentrated liquid human milk fortifiers including extensively hydrolyzed casein and a stabilizer system. The stabilizer system includes an OSA-modified corn starch in combination with a low acyl gellan gum. In one embodiment, the concentrated liquid human milk fortifier is hypoallergenic and includes extensively hydrolyzed casein as the sole protein source in combination with the OSA-modified corn starch and low acyl gellan gum.