It sounds like you're describing a delightful sponge cake enriched with preserved fruits. The combination of the moist and soft vanilla base along with the tangy bits of preserved fruits makes it a tempting treat. This cake not only makes for a great snack but is also suitable for lunchboxes, busy workdays, and teatime. If you have any specific questions or if there's anything else you'd like to know or discuss, feel free to let me know!