Midrash for Pesachim 71:17

ומאי שנא ממנחת העומר דתניא מנחת העומר לותתין אותה וצוברין אותה ציבור שאני

Alternatively I can say: After all it means with milk, [but] as Rabina said, [When made] like the eye of an ox, it is permitted;<span class="x" onmousemove="('comment',' I.e., when made very small, so that it is at once entirely eaten up, and nothing is left for later.');">¹⁷</span> so here too, [it was] like the eye of an ox.'

Sifrei Devarim