Those are my cupcakes..the embossed ones in the original picture. I haven't been on here for ages so was worried I may have missed an email from cupcakecouture asking about them (no email so I don't feel guilty for not answering now phew). Those ones in particular are done with a roller.....I think it's the swan patterned roller (it's a medium size) but mine broke as soon as I got it (fell on the floor & broke in 2 so don't drop them) so it makes it harder to use it
Cost a small fortune (it was the first time I used a roller as I originally used a different method to emboss before the patterned rollers or templates were around) but I really should get another one as it's my favourite pattern so far. I don't even know the brand but will find out.
Yeah unfortunately stamps need to be food grade. Certain chemicals are used to make the stamps that aren't suitable for food & can result in food poisoning (yikes) so thankfully for food grade ones!