This is an amazing Filipino cake; I urge you to find the ingredients and try it. Ube (purple yam) is often available frozen in Asian shops. Macapuno is a kind of jam made from coconut, also in Asian shops.
Note: Ube (pronounced "OOH-bee") is also available in a jar, precooked and mashed. It can also be found in a packet in the frozen section. Many Asian stores sell either form of ube. Sometimes its labeled as "ube" or "purple yam". - 21 Mar 2007 (Review from Allrecipes USA and Canada)
I love purple yams and was looking for a purple yam cake recipe after I tried it at a birthday party, and wow! I love this recipe! I made them into cupcakes and baked them for 13 minutes. So delicious, moist, and fluffy. I added the 1/2 cup of macapuno to the frosting (and used condensed milk instead of evaporated milk) and it was great (although very very sweet). I also didn't add color to the frosting because white was a nice contrast. I also had to double the food coloring in the cake batter because it wasn't purple enough (was grayish). This cake was a lot of work but well worth it, I LOVE it! - 10 Feb 2007 (Review from Allrecipes USA and Canada)
NOTE: Use condensed milk instead of the evaporated and the icing will turn out. If you don't beat the batter too long the cake is not dry and doesn't crack. This was a work of love to make as is any from scratch recipe. Yes, I am a filipina. - 18 Dec 2006 (Review from Allrecipes USA and Canada)