Definition of "intensely"

You could just use ordinary shop-bought kecap manis to marinade the meat, but making your own is easy, has a far more elegant fragrance and is, above all, such a great brag! Flavouring kecap manis is an intensely personal thing, so try this version now and next time cook the sauce down with crushed, split lemongrass and a shredded lime leaf.

2015 October 27, Matt Preston, The Simple Secrets to Cooking Everything Better‎, Plum, page 192