Cassava cake is totally safe to eat while breastfeeding, mama, it won't pass anything harmful through your milk! As for asthma, cassava itself isn't a known trigger, but if your baby has existing asthma or allergies, it's always good to observe kung may changes after you eat anything new (which you're probably doing na anyway as a first-time mom). Enjoy your cassava cake guilt-free, we need our comfort foods, especially when we're running on broken sleep and pumping at work!