Yea, what you eat can have a lot of effect on what your fat is like. Take people who drink a lot of beer, men and women alike, they tend to have firmer fat, and people who eat sugary foods and breads tend to gain gelatinous fat. Also things that are high in simpler fats such as butter and peanut butter can help build gelatinous fat.
But genes are the thing that truly govern how you gain fat, but age is also a factor. People who got fat fairly young, ranging from pre-teens to early twenties, generally have softer fat aswell.
16 years