What happen to the Green Tea Cake?

The non-dairy cream cannot be whipped up. It was from a smaller packet of 250g which I freeze up in the freezer when I bought Pour n Whip about 4 months back, and repackaged it into smaller qty.

When I took out to defrost, it appears to be more watery. The cream (white part) seems to have separated from the liquid and precipitated out. Anyway, I gave it a 2 tries. It could not be creamed. Ok, no green tea cream cake, only green tea sponge cake.

The sponge cake could have been baked longer. The bottom is a bit dense. It sank after taking it out. It was in the oven for 20mins. My sister says the recipe is more for layer cakes & should baked it in 2 batches.

Next time, I'll try baking at 180C, for 30mins.